GitLab

Long overdue check-in of intermediate browser build, from continued "out of hours" work. Forgot to add a few files last time too.

List dialogue box handler complete, and exclusion lists implemented
within the main browser code. Full documentation in Choices file.
Save routine knows all about it but is now getting very slow - must
come up with a better scheme; for now, it puts the hourglass on...

StripExtensions option controls auto stripping of filename extensions.

More sensible ancestor / frame selection for keyboard shortcut items
and the save dialogues - having selected a frame won't lock you into
it for F3 and related shortcuts now (input focus in URL writable ->
get ancestor details, input focus in frame -> get frame details). F4
works in frames. F5 now generally present for 'view source' with a
corresponding menu entry in the File menu.

Odd thing in later Res files; there's no action set for Adjust clicks
on the main ToolAction items in the button bar. Very odd. Nothing
appears to be set in v2.07 either, yet adjust-click works. Even
stranger. Anyway, added in the relevant event details (same as for
Select click in all cases) and this fixes the problem.

Background colours in the TABLE tag ignored the "don't print any
backgrounds" Print Style setting. Fixed. Meanwhile, the "black
text with no backgrounds" option wasn't getting this right either;
fixed this also.

Event logging implemented; HTTP errors and script output via.
window.print extension. No internal error output yet.

Faith:Never behaviour extended. If ever a server sends something with
no content type or an unhandleable type, the browser will try and get a
filetype from the URL. If it gets text or HTML, it'll render the file.
Else it'll save it. Hacks around IIS 4's lack of a content type field
in the Marketeye login stuff, and similar other slightly broken sites.

Intermediate check-in; building a browser from this gives you something between 2.07 and 2.08. Only the Phoenix JavaScript resources are fully up to date.

I *think* these are the changes since the last check-in:

When saved as a Draw file, horizontal rules were plotted one page width
too far to the right (wonder when that started happening?!). Fixed. In
addition, DrawFiles now accepted as OBJECTs - they weren't in the
recognised filetype list before. Doh.

Table size calculator tables_count_table would overestimate the number
of cells where ROWSPAN was present and there were other rows below the
one spanned. Fixed. In certain odd cases (e.g. optimised image exports
as HTML tables (!!) from the Gimp) this can save vast amounts of RAM.

Fixed problem where printing stops in the middle of a document. Redraw
engine pagination code was written in the days where lines couldn't
have gaps between them; they can now. If a gap fell at the bottom of
a page the engine would look down, see no line straddling or touching
the page edge, and assume there was nothing more. This case is now
correctly handled.

Made sure desktop and testbed Browse Res files had up-to-date Encoding
menus (v2.07 Phoenix has different menus from v2.07 Browse by oversight).

URL auto-completion piggy-backed onto manual completion code; any string
without '.', '/' or ':' in it gets run through completion to see if a
more meaningful item can be produced - "www" special cased out though.

New List dialogue box handler, used for proxy exclusions etc.
(incomplete), complete with appropriate Res file objects.

Replacement set of Hangul syllables, created from Hanterm's Johab Iyagi font. All 11,172 syllables now present. They no longer match the single

Jamo block though.

Tweaks to export rules in Makefile - ResJ source for JavaScript builds, all of User dir exported, resources rule exports About as well as User.

Handles images with a width or height of 0 specified in the HTML.
Previously went for a default size placeholder and changes to image
sizes and/or redraw problems could occur before/after subsequent
reformatting (involved trivial changes to image_get_image_size and
image_redraw_area only).

Default parameter HRs now plot properly in rectangular pixel modes.

Choices code updated to cope with the minimum font size, JS support,
watchdog on/off and timeout, Navigator object option added generally
(act even *more* like Navigator), image GC after fetch, and image
GC unused image / free RAM constraints.

Code in JSnavigator.c updated to obey new "act more like Navigator"
option (see above). Currently declares itself as version 3.0.

Resources for all builds are up to date. All links in default hotlist
verified and corrected where necessary, with several new links added.

This is Release v2.07. Not tested very much, sorry; YMMV.

Lazy clearing of backgrounds - pages with the same background image or
colour won't be cleared to grey when going from one to the next anymore.

BODY element onLoad script attribute implemented properly (beyond the
Customer hackery).

Images use independent flex blocks for URL and transient fetch data;
greatly improved data throughput in image system as a result. Image
renumbering implemented - speeds up closing of pages / frames with
many images. Image xref is still rather slow though and images with
a 0 width or height specified in the HTML still cause an incorrectly
formatted page to appear.

Have, I think, fixed the "stops anti-aliasing" bug. Noticed that some
background images are not being processed as Fast (e.g. at the
Fibblesnork Lego Guide) - that old problem has reappeared, then.

Background images would cross reference when two pages had the same
background colour set in <body> elements but one was configured to use
document colours and one wasn't (so xref should not occur). Code was
looking at b->background_colour; corrected to call redraw_backcol(b).

Titles were added to the history according to the fetch URL not the
display URL, though the former is more likely to be in the history due
to the code execution order in the fetcher; changed to see whether this
improves upon the rather hit and miss addition of titles.

The 'about:' page now gets entered into the history (makes for much more
sensible behaviour if it is configured as a Home page, for example).

Another intermediate check-in, resources may not be up to date; items most likely to be buildable are PhoenixJ and BrowseD. Done because I'm about to make some rather dodgy changes to code otherwise unchanged since the Customer browser and I may well have to back them out...

In Handlers.c now set the HFlags_HasBeenVisited bit of a token at the point
it is first clicked on. Means the link returns to a "visited" colour after
the highlight flash immediately. This will persist for as long as the browser
window is kept open on that page, though if the URL doesn't end up making it
into the history for whatever reason it would "unhighlight" on reload; fair
enough, really. The highlight is window-local, so there are no redraw worries
for other open windows with links to the same URL (though other same-URL
links on the same page aren't updated either).

All forms submissions force a reload (principally for eudoramail.com, but
many other sites have similar requirements).

!MkClean and !MkClnAll didn't correctly call the utility to strip Makefile
dependencies. Fixed.

On fetch closedown, fetchpage_preprocess_token could be called on a token
which had already been run through the preprocessor. Now checks the flags
word before proceeding.

Image RAM cache and garbage collection system implemented - see new Choices
file entries CollectAfter, FreeRAMLimit and UnusedImageLimit to get an
overview. This contains groundwork for JavaScript image array support.

More JavaScript support improvements. Any one window object will know its
parent, top, this, etc.; frames array working except for a frameset created
via. multiple documents; opener for something created with window.open is
currently not set and don't know why (property is being created, pointer to
valid object is held, but JS engine returns 'null'. Ho hum) - JSChain won't
work yet, then.

Forgot to mention last time: The frames code changes in Frames.c mean the frames array stuff in JavaScript will be broken. I'll get round to fixing it up eventually. (I did say this was an intermediate check-in...!)

Everyone else seems to be checking lots of stuff in lately, so I've decided to join in. This is an intermediate check-in and so not all resources etc. will be up to date. You should be able to make Phoenix and a debug build out of it. As a reminder, to make a JavaScript build:

 * Build JSLib and NSPRLib. Recommend you leave -DUSEMEMLIB in there (as
   used by default) so you can watch it leak into a dynamic area... :-)
   If you do this, you'll need to build MemLib too, of course. If you
   do NOT use MemLib, *undefine JS_USING_MEMLIB in Main.c*!
 * Run !MkClean. This now strips dynamic dependencies from the MakeFile
   automatically, to save you having to do it yourself.
 * Run one of the TaskObey files with the "J" suffix, e.g. !DeskBrwsJ -
   this uses the same .o directory for object files and exports to the
   same position in the Targets directory as the non-JavaScript build,
   but it does produce a unique binary in 'abs' and symbols table in
   'syms'.
 * Sourcing an appropriate !Run (with increased WimpSlot value), !Boot
   and About resource is done automatically.
 * Some, but not all of the !xxxD (debug) TaskObey files will make
   JavaScript versions in passing - check the JSUFFIX value on the Make
   command line parameters in the file.

This'll only work on RISC OS 3.1 due to the use of MemLib.

Here's the change list:

Included MNG icons in sprites files; added Sprites23 for some builds.
Added in ANT URL file icon (b28) derived from URI file icon, because
the Save dialogue can need it.

No, you do *not* need to define the same keyboard shortcuts in each
frame since the ancestor keeps the input focus and we've basically
dropped non-nested Wimp support. Maintaining no less than 4 lists of
identical shortcuts was a pain. Some Res files now only have the
lists in the main browser window and button bar objects (these two
are both required still).

Ursula build Markers button arrangement changed from 1x3 horizontal to
2x2 tilted, as in Phoenix, by popular demand.

Couple of hotlist bugs fixed; dragging an item and deleteing it with
Ctrl+X didn't terminate the drag, and deleteting an item underneath a
menu opened for it didn't close the menu.

'SendReferer' option added to all Choices files, all set to 'always'.
Put just beneath 'Clone' as it refers to header items, though really,
both Clone and SendReferer should probably be in the "Fetch controls"
section rather than "Multiuser environments and proxying"! Front-end
control of this is available.

In image_export_original, save_save_source, save_transfer_source and
save_save_object, flex_set_budge(0) was called to lock the heap but the
return value wasn't stored. flex_set_budge(1) was then used to unlock
the heap. All calls now remember and restore the old value, which is
both safer in case one calls another and allows the flex_set_budge
call in Main.c to have an application-wide meaning, as intended.

Some restructuring to the data load and RAM transfer sections of
Protocols.c; remote hotlist builds wouldn't allow files to be loaded
to browser windows before, and can now drop URL, URI or text files to
the Open URL dialogue.

New option "MinimumFontSize", lets the 'size' attribute of the 'font'
element be overridden. Default value is 1, to allow the full range of
values for the attribute. Setting to 7, for example, would give font
size 7 text at all times. Another new option, "ToggleOnXOnly", to
make Toggle Size only extend the window vertically (with Ctrl then
being used to toggle to genuine full size, rather than vice versa).
All Choices files updated to hold both of these options; only the
first has front-end control available (see debug build Res file).

JavaScript Document object exists; frames array etc. working. Can now
just about use "http://www.acorn.com/~ahodgkin/jschain/" but it does
abort after a bit - problems with frames again, I suspect. Is is pretty
slow, too. Can now press Escape to terminate a script.

Main.c erroneously referred to Controls file entry "StopWebServe" as
"StopWebProxy". Fixed.

Keyboard shortcuts to raise SaveFile are now possible in a general sense;
the code before was in the ToBeShown handler and just checked for a parent
component of -1. It then assumed "save frame HTML source". Now there's the
savefile_raise_from_shortcut function, which together with the seven new
event codes in SaveFile.h allows saving of HTML source and frame location,
export of links, images, backgrounds and the page as text or draw, to all
be invoked by keyboard shortcuts. Some Res files have some of these defined.

In reformat_check_height, the first check to see if setpara should be set
references a field in tpLast without checking if it is NULL. Whilst the
'line > 0' check should mean that tpLast wasn't NULL anyway, a direct
call to the function from outside of the reformatter might have tripped
up on this - the check for tpLast != NULL is now made.

Adjust-click on close icon in window showing file: URL attempts to open
the parent Filer window.

Reformatter used to try and find a selectable token if keyboard control
was enabled in a really stupid place - could make reformatting become
very slow if no selectables were present, especially if the page had a
few tables on it. Preprocessor now does this (since it goes through all
of the tokens anyway), the reformatter just doing a last check to ensure
no frames have obscured the selectable and if so, it tries to move it.
Done in the reformatter as generating a line array implies the data really
is visible.

Ctrl+Tab URL completion now builds a full list of matches from the hotlist
and history and can cycle through them (Ctrl+Shift+Tab stepping backwards).

Will give a real error rather than just "Data Abort" if it goes wrong
now. Someone somewhere is setting bit 30 of the error which confused
the replacement signal handler. Flag bits are now masked off (as they
should've been to start with).

CVS crashing. Some of the Resources may well be out of date due to CVS
locks being in place after earlier server-end core dumps, which I can't
remove myself.

I'll try and check one file in at the end with the full change log so
people know what's happened (it's reached about 16K...) - I'll make
that the TaskObey file '!All' in the top level directory. So for the
full log, look for the changes on this file.

CVS crashing. Some of the Resources may well be out of date due to CVS
locks being in place after earlier server-end core dumps, which I can't
remove myself.

I'll try and check one file in at the end with the full change log so
people know what's happened (it's reached about 16K...)

By request, an intermediate 2.06 check-in. This is not a "proper" release and will need some Makefile fiddling etc. to swap between JavaScript and standard builds and so-forth. The Resources files are not all up to date; only Phoenix and the testbed Browse are more or less current. Right now,

JavaScript doesn't work, SO COMPILE IT OUT. But to make a JavaScript build
for a larf -

 * Build JSLib and NSPRLib. Recommend you leave -DUSEMEMLIB in there (as
   used by default) so you can watch it leak into a dynamic area... :-)
   If you do this, you'll need to build MemLib too, of course. If you
   do NOT use MemLib, *undefine JS_USING_MEMLIB in Main.c*!
 * Run !MkClean
 * Add -DJAVASCRIPT to DFLAGS in MakeFile
 * Strip dynamic dependencies from MakeFile
 * Rebuild Phoenix or the Desktop build of Browse
 * In the exported copy, increase the !Run file WimpSlot value; either
   use the appropriate symbols table in 'syms' or use about 960K for
   non-debug, 4600K for debug builds.
 * If the exported copy has an About resource, edit the HTML file inside
   and uncomment the line about JavaScript.
 * Reverse most of the above to rebuild a non-JavaScript copy! :-O

I hope to have much of the above automated soon (either by a new target,
or preferably hackery with the MakeFile).

Here's the change list:

References to 'Phoenix' removed from Ursula build Res file Choices dialogue
help text (only a couple of them). Cookie value display made taller in the
Cookie Query dialogue (prompt field shrunk to accommodate this).

Yikes - ever since markers, "reformat page to fit paper" hasn't done
anything when printing; the reformatter reset the HTML page limits to
the window size at startup! Fixed. Using markers, you can now also reformat
from the top of the visible area and still reformat to fit the paper; the
print dialogue used to grey out the reformat option in this case. It still
does this when printing to the bottom of the visible area, though.

You can drag text files to form writables (single and multiple line,
but NOT password items (deliberately; it's trivial to add this but I
think it'd be a bad idea)). Normally, data is appended up to the limit
specified by the field (unlimited for multiple line items). Holding
down Ctrl replaces the current value entirely (still, again, limited
by maximum field length). The caret is moved from wherever it currently
is and placed at the end of the added data. Note that you *cannot* insert
in the middle of text by placing the caret and dropping.

Things can get distinctly sluggish when you start dragging many Ks of
text file into a multi-line writable, so the keyboard buffer is cleared
for any input code < 32, equal to 127 (backspace - this one is a little
less clear cut, but I think it's probably worthwhile) and anything
> 255. This way, when typing, you don't lose characters; but when moving
around, you don't find the cursor "running away" from you.

Multi-line writables (text areas) would redraw a vertical column taller,
or horizontal column wider than the element covers itself should the
user scroll enough in any one direction (e.g. Ctrl+Up or Ctrl+Down to
go to the top or end of the area). The code working out how much of
the area to redraw by the number of lines or columns moved didn't ensure
it kept within the area. Because an update rather than force redraw is
done, with background blending turned on text around the area would
"thicken". Now fixed.

Form menu entries have (at long last) a space appended to each one, so
the Wimp doesn't get confused and think something is a keyboard shortcut
when someone expresses "Formula 1" as (say) "F1"... Now fill in the menu
width entry from having read the actual VDU character width and spacing,
not that anyone uses the original RO 3.1 Wimp with Browse any more! (The
code existed elsewhere anyway, so it was trivial to add).

Ctrl+U in a multi-line writable clears the contents of the line the caret
is on, but doesn't delete the line itself. Ctrl+J now does this.

DDFLAGS doesn't set ALIAS_URLS - Customer build has this now.

Tiled images were being plotted in the wrong place in some modes (a '+4'
in the starting y coordinate calculations in the three filler / tile
functions should have been '+wimpt_dy()').

MessageTrans lookup buffer extended from 256 to 320 bytes (Limits_Message
in Limits.h), mostly to support Messages files alterations for the About
page.

Spelling error in URI handler menu for Desktop (also known as Ursula,
though this is now something of a misnomer) build corrected. There was
a missing 'l' in 'handler'). StartProxy setting in Choices was 'no' and
is now 'yes'.

Downloading files of sizes over about 20Mb would cause an overflow in
the % calculating code ("(fetched * 100) / file_size" as opposed to
"100 * (fetched / file_size)" with (float) and (int) casts as required.
Percentages now shown to 1dp; Mb displays to 2dp where the file size is
not known.

Download speed is now indicated in Small Fetch windows. Increased the
delay between progress indicator updates as part of this, and modified
Res files to cope (byte counter needs to be enlarged quite a lot). It
isn't shown in normal browser windows because the enlarged byte counter
looks daft in that context (normally, there's never enough information
to fill even half of it).

Adjust-click on an unlinked part of a client side image map could give an
invalid object ID error from accidentally using the return value of a
previous Toolbox call instead of the return result of a call to a fetcher
routine - because given it had a NULL pointer for the URL, there was no
such call made. Corrected in windows_create_browser() and
handle_link_clicks() won't try to do this in the first place anymore.
fetchpage_fetch_targetted() will also warn of such NULL pointers in
TRACE builds.

Submitting a GET form back to the same URL would lead to the query
string getting appended to the fetch URL over and over. form_build_data
now checks to see if there's already a query string in the submission
URL for GET methods and if so, strips it. fetchpage_new_add will do a
similar thing in the case of the additional data starting with '?'.

When following a link, if RefoKeep was 'yes', the page could sometimes
jump to a pre-stored scroll position; it was down to the resize routines
remembering it, but if windows_check_reformat() or windows_remember_size()
didn't actually do a reformat the position was not forgotten. It is now,
so this jumping should no longer occur.

Single character leafnames (e.g. "a.class") used to be reported just as
"Index" in a save dialogue for the object. Fixed.

<P> elements could fail to work as expected in some circumstances. For
example, there would be no gap above '<p> <b>...' - the <b> text doesn't
have the <p> attached, the tag before it does. However, the white space
on this tag gets stripped so it ends up with a NULL text field. This
means that paragraph space is allocated but the text height for the line
thus far is zero. This has been fixed through special case code in
reformat_check_height.

browser_base_url() function added, which through browser_base_callback
can supply a base URL for the current document.

In-page references (URLs with '#something' in them) would fail if the
page contained a BASE tag which pointed elsewhere (that is, the page
would be fetched from its base URL and references would work thereafter;
not very useful for developing sites on your local hard drive). Fixed.
Fixed also the problem where in-page references would fail once after
a forced reload.

Several ultra-stupid bugs in image cross referencing code within
image_update_image fixed:

 - No longer redraws *every* page with the same background when
   *any* of those backgrounds are updated; just if the page with
   the actual image data attached is updated. Doh!

 - Similarly, no longer updates every copy of an image when asked
   to update any of them, only when the one holding the actual image
   data is updated.

 - In the above cases, image array a scanning is avoided wherever
   possible now, whereas it used to happen for any update.

Animated masked GIFs will no longer flicker briefly when they are first
viewed on a page.

Hacky but useful optimisation in Images.c. Local compilation option
'FAST_TOKEN_REFERENCE' controls whether or not the flags word of each
HStream associated with an image_info struct is used in part to store
the image's array index. If so, there's no array scanning to do - this
signficantly speeds up cross referenced image handling. It's still
rather undertested "but it seems to work". The number of bits used for
the array index is controlled by FAST_TOKEN_REFERENCE_SHIFT, and is
currently 20, giving around a 1 million image limit on the browser
and leaving 12 bits for genuine flags (only 3 currently used).

If an error occurred when Message_PlugIn_Opening was received, Browse
would exit early with the message - before it removed the plug-in from
the queue, thus stopping other launches. The error is now reported and
then the item is still removed, preventing this problem.

The BASEHREF entry in the parameters file used for plug-in launching
will now give the contents of any BASE tag in the document before
looking at the display URL, then the fetch URL.

When a new page is visited or a browser window closed, any in progress
fetches for plug-ins are abandoned. They weren't before, which caused
all sorts of problems later on. In addition, any pending plug-in items
in the queue may not have been correctly flushed (the first item may
have been left behind), which can cause mis-firing of the plug-in
engine as it picks up outdated queue items and attemps to launch them.
This has also been fixed.

Fixed problem with asynchronous delivery and reception of the Stream_New
plug-in protocol messages, which previously would be incorrectly handled -
Browse assumed that, as with plug-in launch, only one fetch would be running
at a time (or the message passing between plug-in and fetch window would
occur synchronously). This is not the case, and a variety of problems could
be seen if the system broke down. The most obvious symptom is in Scrap,
where Browse used to leave behind "BTFxxxxx" files on quit.

Intermittent "Invalid object ID" errors cured; the Find dialogue box
handler wasn't clearing its remembered ID, and since Find is a shared
object, that object could get deleted without the Find code
realising.

Corrected mis-spelling of "Parameters" n comment block at top of
about_copy_info_file(), which fouled up the documentation auto-generation.

BuildSHelp will recognise functions indented by 2 spaces, assume they're
indented because of a wrapping #ifdef, and put 'Conditionally compiled.'
under the name of any such functions. It no longer outputs broken manuals
if no functions are found in a source file. More robust to odd input due
to extra EOF checking.

New utility BuildHTML, to generate HTML pages in the same manner as
BuildSHelp, created from BuildSHelp. This was done to support Ferrotec
who'd like StrongHelp-like documentation but don't want to be tied to
Acorn machines (and haven't got any at the time of writing anyway!).
HTML was agreed as a good, easy format to go for.

Have begun to implement JavaScript support. Updated !Boot and !Run[D]
files to define File$Type_F81 and Alias$@RunType_F81 (0xf81 is a
JavaScript script file, 'JSScript', MIME type application/x-javascript,
common filename extension '.js'.). !Sprites[22] files have the relevant
file icons added. Messages files extended with various tokens for
miscellaneous error messages, error box buttons etc. Created a Browse
About: page section based on the JavaScript filetype - we at last
credit the use of the JPEG group software, LibPNG, etc.

By request, an intermediate 2.06 check-in. This is not a "proper" release and will need some Makefile fiddling etc. to swap between JavaScript and standard builds and so-forth. The Resources files are not all up to date; only Phoenix and the testbed Browse are more or less current. Right now,

JavaScript doesn't work, SO COMPILE IT OUT. But to make a JavaScript build
for a larf -

 * Build JSLib and NSPRLib. Recommend you leave -DUSEMEMLIB in there (as
   used by default) so you can watch it leak into a dynamic area... :-)
   If you do this, you'll need to build MemLib too, of course. If you
   do NOT use MemLib, *undefine JS_USING_MEMLIB in Main.c*!
 * Run !MkClean
 * Add -DJAVASCRIPT to DFLAGS in MakeFile
 * Strip dynamic dependencies from MakeFile
 * Rebuild Phoenix or the Desktop build of Browse
 * In the exported copy, increase the !Run file WimpSlot value; either
   use the appropriate symbols table in 'syms' or use about 960K for
   non-debug, 4600K for debug builds.
 * If the exported copy has an About resource, edit the HTML file inside
   and uncomment the line about JavaScript.
 * Reverse most of the above to rebuild a non-JavaScript copy! :-O

I hope to have much of the above automated soon (either by a new target,
or preferably hackery with the MakeFile).

Here's the change list:

References to 'Phoenix' removed from Ursula build Res file Choices dialogue
help text (only a couple of them). Cookie value display made taller in the
Cookie Query dialogue (prompt field shrunk to accommodate this).

Yikes - ever since markers, "reformat page to fit paper" hasn't done
anything when printing; the reformatter reset the HTML page limits to
the window size at startup! Fixed. Using markers, you can now also reformat
from the top of the visible area and still reformat to fit the paper; the
print dialogue used to grey out the reformat option in this case. It still
does this when printing to the bottom of the visible area, though.

You can drag text files to form writables (single and multiple line,
but NOT password items (deliberately; it's trivial to add this but I
think it'd be a bad idea)). Normally, data is appended up to the limit
specified by the field (unlimited for multiple line items). Holding
down Ctrl replaces the current value entirely (still, again, limited
by maximum field length). The caret is moved from wherever it currently
is and placed at the end of the added data. Note that you *cannot* insert
in the middle of text by placing the caret and dropping.

Things can get distinctly sluggish when you start dragging many Ks of
text file into a multi-line writable, so the keyboard buffer is cleared
for any input code < 32, equal to 127 (backspace - this one is a little
less clear cut, but I think it's probably worthwhile) and anything
> 255. This way, when typing, you don't lose characters; but when moving
around, you don't find the cursor "running away" from you.

Multi-line writables (text areas) would redraw a vertical column taller,
or horizontal column wider than the element covers itself should the
user scroll enough in any one direction (e.g. Ctrl+Up or Ctrl+Down to
go to the top or end of the area). The code working out how much of
the area to redraw by the number of lines or columns moved didn't ensure
it kept within the area. Because an update rather than force redraw is
done, with background blending turned on text around the area would
"thicken". Now fixed.

Form menu entries have (at long last) a space appended to each one, so
the Wimp doesn't get confused and think something is a keyboard shortcut
when someone expresses "Formula 1" as (say) "F1"... Now fill in the menu
width entry from having read the actual VDU character width and spacing,
not that anyone uses the original RO 3.1 Wimp with Browse any more! (The
code existed elsewhere anyway, so it was trivial to add).

Ctrl+U in a multi-line writable clears the contents of the line the caret
is on, but doesn't delete the line itself. Ctrl+J now does this.

DDFLAGS doesn't set ALIAS_URLS - Customer build has this now.

Tiled images were being plotted in the wrong place in some modes (a '+4'
in the starting y coordinate calculations in the three filler / tile
functions should have been '+wimpt_dy()').

MessageTrans lookup buffer extended from 256 to 320 bytes (Limits_Message
in Limits.h), mostly to support Messages files alterations for the About
page.

Spelling error in URI handler menu for Desktop (also known as Ursula,
though this is now something of a misnomer) build corrected. There was
a missing 'l' in 'handler'). StartProxy setting in Choices was 'no' and
is now 'yes'.

Downloading files of sizes over about 20Mb would cause an overflow in
the % calculating code ("(fetched * 100) / file_size" as opposed to
"100 * (fetched / file_size)" with (float) and (int) casts as required.
Percentages now shown to 1dp; Mb displays to 2dp where the file size is
not known.

Download speed is now indicated in Small Fetch windows. Increased the
delay between progress indicator updates as part of this, and modified
Res files to cope (byte counter needs to be enlarged quite a lot). It
isn't shown in normal browser windows because the enlarged byte counter
looks daft in that context (normally, there's never enough information
to fill even half of it).

Adjust-click on an unlinked part of a client side image map could give an
invalid object ID error from accidentally using the return value of a
previous Toolbox call instead of the return result of a call to a fetcher
routine - because given it had a NULL pointer for the URL, there was no
such call made. Corrected in windows_create_browser() and
handle_link_clicks() won't try to do this in the first place anymore.
fetchpage_fetch_targetted() will also warn of such NULL pointers in
TRACE builds.

Submitting a GET form back to the same URL would lead to the query
string getting appended to the fetch URL over and over. form_build_data
now checks to see if there's already a query string in the submission
URL for GET methods and if so, strips it. fetchpage_new_add will do a
similar thing in the case of the additional data starting with '?'.

When following a link, if RefoKeep was 'yes', the page could sometimes
jump to a pre-stored scroll position; it was down to the resize routines
remembering it, but if windows_check_reformat() or windows_remember_size()
didn't actually do a reformat the position was not forgotten. It is now,
so this jumping should no longer occur.

Single character leafnames (e.g. "a.class") used to be reported just as
"Index" in a save dialogue for the object. Fixed.

<P> elements could fail to work as expected in some circumstances. For
example, there would be no gap above '<p> <b>...' - the <b> text doesn't
have the <p> attached, the tag before it does. However, the white space
on this tag gets stripped so it ends up with a NULL text field. This
means that paragraph space is allocated but the text height for the line
thus far is zero. This has been fixed through special case code in
reformat_check_height.

browser_base_url() function added, which through browser_base_callback
can supply a base URL for the current document.

In-page references (URLs with '#something' in them) would fail if the
page contained a BASE tag which pointed elsewhere (that is, the page
would be fetched from its base URL and references would work thereafter;
not very useful for developing sites on your local hard drive). Fixed.
Fixed also the problem where in-page references would fail once after
a forced reload.

Several ultra-stupid bugs in image cross referencing code within
image_update_image fixed:

 - No longer redraws *every* page with the same background when
   *any* of those backgrounds are updated; just if the page with
   the actual image data attached is updated. Doh!

 - Similarly, no longer updates every copy of an image when asked
   to update any of them, only when the one holding the actual image
   data is updated.

 - In the above cases, image array a scanning is avoided wherever
   possible now, whereas it used to happen for any update.

Animated masked GIFs will no longer flicker briefly when they are first
viewed on a page.

Hacky but useful optimisation in Images.c. Local compilation option
'FAST_TOKEN_REFERENCE' controls whether or not the flags word of each
HStream associated with an image_info struct is used in part to store
the image's array index. If so, there's no array scanning to do - this
signficantly speeds up cross referenced image handling. It's still
rather undertested "but it seems to work". The number of bits used for
the array index is controlled by FAST_TOKEN_REFERENCE_SHIFT, and is
currently 20, giving around a 1 million image limit on the browser
and leaving 12 bits for genuine flags (only 3 currently used).

If an error occurred when Message_PlugIn_Opening was received, Browse
would exit early with the message - before it removed the plug-in from
the queue, thus stopping other launches. The error is now reported and
then the item is still removed, preventing this problem.

The BASEHREF entry in the parameters file used for plug-in launching
will now give the contents of any BASE tag in the document before
looking at the display URL, then the fetch URL.

When a new page is visited or a browser window closed, any in progress
fetches for plug-ins are abandoned. They weren't before, which caused
all sorts of problems later on. In addition, any pending plug-in items
in the queue may not have been correctly flushed (the first item may
have been left behind), which can cause mis-firing of the plug-in
engine as it picks up outdated queue items and attemps to launch them.
This has also been fixed.

Fixed problem with asynchronous delivery and reception of the Stream_New
plug-in protocol messages, which previously would be incorrectly handled -
Browse assumed that, as with plug-in launch, only one fetch would be running
at a time (or the message passing between plug-in and fetch window would
occur synchronously). This is not the case, and a variety of problems could
be seen if the system broke down. The most obvious symptom is in Scrap,
where Browse used to leave behind "BTFxxxxx" files on quit.

Intermittent "Invalid object ID" errors cured; the Find dialogue box
handler wasn't clearing its remembered ID, and since Find is a shared
object, that object could get deleted without the Find code
realising.

Corrected mis-spelling of "Parameters" n comment block at top of
about_copy_info_file(), which fouled up the documentation auto-generation.

BuildSHelp will recognise functions indented by 2 spaces, assume they're
indented because of a wrapping #ifdef, and put 'Conditionally compiled.'
under the name of any such functions. It no longer outputs broken manuals
if no functions are found in a source file. More robust to odd input due
to extra EOF checking.

New utility BuildHTML, to generate HTML pages in the same manner as
BuildSHelp, created from BuildSHelp. This was done to support Ferrotec
who'd like StrongHelp-like documentation but don't want to be tied to
Acorn machines (and haven't got any at the time of writing anyway!).
HTML was agreed as a good, easy format to go for.

Have begun to implement JavaScript support. Updated !Boot and !Run[D]
files to define File$Type_F81 and Alias$@RunType_F81 (0xf81 is a
JavaScript script file, 'JSScript', MIME type application/x-javascript,
common filename extension '.js'.). !Sprites[22] files have the relevant
file icons added. Messages files extended with various tokens for
miscellaneous error messages, error box buttons etc. Created a Browse
About: page section based on the JavaScript filetype - we at last
credit the use of the JPEG group software, LibPNG, etc.

MIDI themes is unreachable, Hensa has been restructured.

For table cells where the line or chunk data totals less than Flex_256_Point
bytes (see top of Memory.c, current value is 8192) there would be an over-
allocation of 1 byte per cell due to a (now fixed) bug in the granular
allocator. This would translate into 4 bytes wastage of course, and may
represent a small speed penalty depending on how flex works out block
word alignment.

Several entries in the Choices file were missing from save_save_choices in
its new form (see last check-in). Added back in. Ursula and Phoenix Res
files contained an incorrect component ID in pane 3 that was stopping the
'no scroll bars' option in pane 7 working correctly (duplicate component
ID). Res files corrected; TRACE builds will now spot such errors and give
a warning when they occur (in choices_find_component).

Table widthing code fixes:

 * Very wide table cell specifiers (e.g. TD WIDTH="2000") were ignored,
   but this isn't what Navigator / MSIE 4 do. This code was present
   because of other bugs in the widther, long since fixed. The code has
   been commented out - if the problem reappears the use of the code can
   be re-investigated, but as far as I can tell it isn't needed.

 * If two pixel specified cells appear one above the other, the first
   would always have been taken for use in the final width calculation
   even if it specified a smaller width than the second. The check was
   made to ensure that pixel specifiers were chosen in preference to
   other cells, which is OK, but it didn't notice if the current cell
   was also a pixel specifier! Fixed; you now get the widest.

 * The TRACE build 'Colspan cell xxx would have been width yyy, below
   minimum width of zzz' error should no longer happen. In a manner similar
   to the bug mentioned above, two cells above each other spanning the
   same columns with the lower cell narrower than the upper would end up
   with the narrower width. The code that trapped and corrected the error
   was not compiled out of release builds, even though the error message
   generation was, because the rendering would fail otherwise. The widther
   has now been fixed not to make this mistake and the final check is now
   strictly TRACE build only, thereby speeding up table widthing for
   non-TRACE builds.

 * Another use of MSIE4StyleTables option, for cellspacing; it's based
   on the actual used cells, rather than the maximum cell width caused
   by COLSPAN etc. So if you've a cell with a big COLSPAN but as a
   heading but the rest of the table only uses, say, 4 columns, you won't
   get a gap to the right which adds up to the spacing for all of the
   cells that the COLSPAN attribute in the heading implied. The option
   was actually intended as 'bad things when switched on', and though in
   this case it makes for a better rendering, it does hide an error in
   the HTML. Note Navigator 4 acts as Browse with MSIE4StyleTables off
   in this particular case. Oh, it works in both ways of course, so
   the table height routine had to be updated too. A new function,
   tables_find_actual_size, exists to support the feature in general.

Messages files updated to v2.05 (21-Apr-98). Help menu items renamed a
bit in Ursula, Phoenix and Customer Res files, but entries still point
to the same URLs. Phoenix button bar markers have been brought closer
together to stop them being visible when only the URL bar is meant to
be present.

RefoKeep and RefoHold options added to, respectively, try and maintain
the line at the top of the visible area when reformatting, and not shrink
the vertical extent at the start of a reformat to try and avoid flicker
to the top of the page and back down again when RefoKeep is on. Choices
front-end implemented, which also allows RefoWait and RefoTime to be set.
Unfortunately for various reasons this doesn't help the page jumping when
unsized images come in (but RefoHold can improve matters...) - roll on
the image history.

DragToScroll and NoScrollBars options added for frames; included new
pointer type, Mouse_Shape_DTS, so relevant Controls file entries done
and Sprites[22] files updated as required. Noticed some builds have
a low-res ptr_link with a mask - mask removed.

Named anchor following fixed up somewhat - anchors near the bottom of
the page shouldn't be displayed, and then pulled down when the fetcher
releases null polls and ensures the y extent is correct (this through
implementing the min_height field in the browser_data structure).

RefoHang was never implemented and there seems little point to it now,
so the entry for it has been removed from the global choices structure
and all Choices files.

Markers menus should work properly now (in last check-in they would not
update correctly if Adjust was used on the entries).

URI handler usage now a lot more sensible, with configuration of how the
browser uses the module from both a Utils menu submenu (sic) and the
Choices dialogue.

Slightly dodgy 'hang around waiting for user input' stuff for the Cookies
dialogue box: All fetches are suspended; the fetcher remembers some info
about its state at the time the cookie came in, and restores it later; it
will only do this for one fetch at a time. It's necessary to single-thread
the fetcher at this point anyway, since other fetches may have a
dependency on the cookie that is hanging in mid-air at that point. As part
of this, some of the fetcher code has been split out into separate
functions (to try and 'black box' the code a bit). Anyway, Cookie Query
dialogue box now implemented with appropriate Choices file entry and
UI work in the Choices dialogue box.

Phoenix build Choices rearranged. Can now choose when the image history
is saved from the front end. Added also MSIE 4-style table option menu
for JPEG support (OS only, OS if it can handle it, internal only).

Should be a bit faster at loading the history - though 95% of the time
is spent in SWI URL_ParseURL. URL descriptions are stored more
efficiently as part of this - one malloc block instead of several
small blocks. The minimum block size for malloc blocks typically leads
to a significantly smaller startup wimpslot depending on the visit
history size.

Nasty bug in image system fixed. If an image size came in and a reformat
was to take place, the line the image lies in is found and the reformat
progresses from there. Unforunately, this didn't check to see if the
token can't be found in the line list, so it'd reformat from the top
of the page...! This would happen if, for example, an image halfway down
the page came in whilst a reformat for an image higher up had just begun.

In Choices.c, made choices_set_timetype_field, choices_set_uri_field,
choices_set_plugin_field, choices_set_cookie_field, and
choices_set_jpeg_field static (so they're not declared in Choices.h now).

Two memory leaks plugged in URL comparison routines in URLutils.c
(calling free() url_description instead of urlutils_free_descripton()).

Client pull reload handler was setting the reload flag if reloading
the same page, but forgetting to turn on reload_lock so
fetchpage_postprocessed was clearing the reload state... Similarly,
Ctrl+Shift+SELECT-Click on a link when the Controls file 'UseSmall'
entry is 'no' would not have reloaded as it should. Both fixed.

Frames shouldn't be so keen on acquiring horizontal scroll bars and never
letting them go when their width is decreased now. Frames set up for
'scrolling="yes"' will not start with no scroll bars and then gain them
shortly afterwards, causing flicker and two reformats - they'll start
with, and continue to hold, both scroll bars.

Pointer shouldn't flicker when over a frame border whilst other fetches
are progressing now.

This is NOT a 'final' version of anything in particular. I'm checking it in as I'm about to start playing around with low level window handling

(as part of the thing mentioned at the bottom of this log) - this could
screw things up quite badly if it goes wrong! =8*P

Consequently, I advise you not to check this out over your working sources,
and preferably not to check this out at all.

Markers system - events defined in MiscEvents.h will make Browse remember
where it is on the page. This position can be jumped back to later.
Some builds will have defined keyboard shortcuts Ctrl+Shift+F5 through
F8 to set a marker, and Ctrl+F5 through F8 to jump to a marker.

The front-end for the above now has gadgets 0x80 upwards on the Toolbar or
a set of menus (see Menus.h). Noticed an omission in copy_toolaction_info()
(didn't copy the gadget state) in passing; fixed.

browser_top_line() now works properly, as part of the above, but it'll be
slower than before. If flagged to only find a complete line, it'll do just
that, but whereas before this would require any tables that it looked
inside to be wholly visible, tables can now be partially visible and have
lines inside that are fully visible. This should help the Find function
too. There is a new call, browser_top_line_offset, which works as
browser_top_line but also returns a vertical scroll offset in the found
line (used for more accurate marker position). browser_bottom_line[_r]
turn out to never be used, even by the keyboard control routines, so they
have been removed from Browser.c (rather than spend a lot of time and
effort fixing them).

browser_show_token erroneously subtracted 1 from a particular coordinate
when calculating the y scroll position, which could lead to single pixel
page creep using the markers system. Corrected.

The View Resources button (see Toolbars.h) has been finally implemented,
insofar as it fetches the resources file to the current browser page (or
to a new window if Adjust is used, Controls file settings permitting).

menus_toggle_bars did not take account of the toolbar lower window border
edge correctly. It does now.

The reformatter has a prototype system to keep the vertical page position
when reformatting. This was coded about 5 minutes ago, and is not likely
to be reliable...

Some compile-time hacks in place to use MemLib, a dynamic area based
malloc replacement which shrinks its heap when possible. All builds
have these switched off at the moment. Seemed to work with just Browse,
though there would be problems with message blocks stored in dynamic
areas because of the Wimp's '&3800000' check - however, it failed when
HTMLLib was made to use it, too. Don't know why yet.

ItemInfo.[c/h] source added, with Res file additions for testbed Browse
and Phoenix.

Small fetch windows now work properly regardless of toolbar settings
in the Choices.

Reload now reloads all images too, rather than only reloading them for
as long as the main page was being fetched.

Added a simple 'Find' facility.

Realised that event handlers in eventlib are called in reverse order
of registration, so the miscellaneous event handler is now registered
first rather than last.

Multiuser code added (most only active if SINGLE_USER is undefined). As
part of this, hotlist code now knows about read-only items (done for the
Customer-style 'Resources' file, but works generally anyway).
handle_add_hotlist doesn't try to save the hotlist itself anymore (the
hotlist_add function does all that through hotlist_modified anyway).

Customer build Choices and Controls updated slightly (e.g. ClaimHelp
off, hotlist to save on quit only).

Customer build now uses Phoenix-style buttons. Sprites files which
worked at the time (but will probably be out of date now) and included
most of the original Customer-style sprites are in
'Utils.Icons.Customer'.

Choices, Messages and Res files for all builds now stripped down to only
single user items or single plus multiuser for Customer build and testbed
build. Before, all contained a few multiuser bits in at least the Choices
file if not more.

Grammatical error ("Fetching frames contents" (sic.)) corrected in
default message, Toolbars.c, and all of the Messages files.

Customer build brought back to a servicable level (including
implementation of the Find dialogue box with animation and fixing
up authorisation and 'Stop' state in the tristate). Quite a few
missing #ifndef REMOTE_HOTLIST bits from hotlist code added...

Customer build will not use <Choices$Write> or Boot:Choices for any
file finding now. UseProxy defaults to 'yes', MaxImages to 2. Res
file includes Proxy Address setting (save_save_choices() now writes
the ProxyAddress line).

The '3F6C0' abort fixed; reformat_left_margin didn't cope with a NULL cell pointer. This only happened if the image library tried to deal with an image in a table cell which wasn't properly dealt with by the table systems yet, for whatever reason. Rare, but persistent once it started happening because it depended on the value of the FIQ vector!

Put function header comments in SaveFile.c, at last.

Messages files now read version 2.01, 23 Feb 1998.

As a finishing touch, replaced the generic 'The browser requires...' errors in the !Run[D] files with '[Appname] requires'.

Customer build Res file fault corrected - URL bar writable icon had
ended up with allowed characters of 'Button' only when a set of
Help messages got imported.

Messages files now say "Version:2.00 (19-Feb-98)". Yay!

Precautions taken in table code to avoid divide by zero errors.

Framesets defining more frames than the frameset implies, for whatever
reason, should never cause a crash now - just report a 'Frames definition
is badly nested' error (if STRICT_PARSER defined). Along the same lines,
in a single document defining a set of nested frames, two /FRAMESETs in
succession could cause a fairly nasty crash. Fixed.

TIFFs do not get loaded by double-click now.

If holding down SHIFT to save a link contents to disc, you can also hold
down CTRL to bypass the cache (sets the browser's reloading flag). Noticed
when testing this that windows_create_browser didn't take account of the
Controls file 'UseSmall' entry when adjust-shift-clicking on links. It
does now.

There is now a complete and up to date set of interactive help messages
built into the Ursula, Customer and Phoenix build Res files.

WindowManager 3.98. Sets URI handler environment variables for
http, ftp and gopher.

Fixed 'doesn't reformat for unsized images' bug - only happens when the
deferred reformatter is enabled, hadn't remembered to check this in my
debug build where this is turned off. Oops.

Caret position in forms could get left behind despite attempts to rectify
this in v1.31 - now fixed (and faster, fortunately).

Hourglass + percentage displayed for History and Image History when
loading - it can take a while for very big histories, though in
practice you only see the visit history loading (has to do a lot
more work, and is thus quite a bit slower than the image history).

POST forms worked when targetted to frames, but were broken when
not targetted! (Forms data inherited from one browser to the same
browser; ended up freeing the flex block...). Fixed.

Now support 303 response code (redirect to GET). Treated as 301, i.e.
not support if STRICT_PARSER is defined, otherwise drops through to
the 302 handling code.

Pointer shouldn't get stuck in odd shapes when going to a new page now;
it gets reset to a standard shape every time the null handler that
checks the position is called, though (whether or not the handler thinks
the pointer is over a different token, if that token is NULL, it sets
the standard shape). A possible work around would be for a browser to
remember the pointer shape too; that's for the future, though.

Early stage table formatting functions could blow themselves apart if
tables_count_table decided there were no rows, columns or both. A
net table size of zero cells is now dealt with; slow, partial table
fetches in multiple windows with image loading turned on will now
*hopefully* be stable, where v1.31 would have bombed out repeatedly.

A nested frameset within one document will now inherit the border
width (frame spacing) and border colour of its parent. This is done
by copying the maxlen and indent fields of the parent token over
the child, and note it's done in the browser (fetch_preprocess_token),
not HTMLLib.

Border colour on a FRAMESET now used, with the first colour on any
FRAME within it overriding, as in NN 4 and MSIE 4.

<LI> bullets really do stick to the text next to them now (I'd done
that in an experimental piece of code and forgotten to merge it back
before the last check-in).

Browse$HotlistURL/URIFile and Browse$HomeURL/URIFile now work from
_TaskName in the Messages file, and are thus of the generic form
<App>$HotlistURL etc. - Docs.Notes and Docs.User updated appropriately.

Event 0x11d00 through to 0x11d7f will make the browser look up Controls
file entries 'JumpTo00' through to 'JumpTo7f' and read a URL from them.
This will be fetched in the ancestor window of the source of the event,
or a new window if such an ancestor can't be found [for Daytona demo].

NB: Nasty frames-related crash at http://www.teledanmark.dk/menu/start.htm
is *not* fixed in this source. NOBR is not supported.

Machine hung during last check-in; trying again... Apologies for sending out such a huge log message *twice*.

Check for WindowManager 3.97 and ensure Unicode$Path is set in all
!Run[D] files, don't set the Alias$@PrintType_FF4 variable, and updated
Customer build ROM obey file variants. Various other changes to
the Run files for new module versions, updated paths to support
new positions of choices, hotlist and histories (see later), etc.

!Sprites[22] files hold small !app icons for some variants, and
an ic_browse sprite. Some variants now have a Sprites and Sprites22
file instead of just Sprites, with the former containing various
mode 12 or 15 specific sprites.

Text files dragged to the URL writable are treated as ANT URL files. This
relies on URLBarWrit (Toolbars.h) being a unique ID, which it should be,
but beware of the Hotlist and Choices numberspaces...

INPUT TYPE=BUTTON supported. Form items without a FORM tag are now shown
(as MSIE 4, but not NN 4).

'*', '-', '@', '_' and '.' are not escaped when submitting forms now. The
Web interface to the IMDb now works.

INPUT TYPE=HIDDEN items will not affect the line height anymore - so
http://www.hotmail.com/ now has correctly aligned writable icons, for
example. Similarly, TAG_FORM and TAG_FORM_END items could push up
line height and don't anymore.

HRs with a specified pixel width will now influence the size of a table
cell (they didn't before).

BRs now checked by tagno field when the browser needs to know something
was an actual BR tag rather than just a line break signal, and by the
style bit entry when only the indication of a line break is required.

Table widths of 0 or 0% are ignored.

Trace.c updated to report height and background fields in a table_stream.

fm_putsl() writes a terminator into the string; the Forms.c routines were
calling this for displaying INPUT TYPE=PASSWORD fields using the FE_PassCode
literal string (a line of stars). This write into a read only data area
would make the debugger fault the access. A local char array is now used
instead, to get round this (note the use of var[]=literal rather than
var[sizeof(literal)]; strcpy(var, literal) due to some weird compiler bug
that copies the wrong thing into 'var' under some (undefined...)
circumstances).

Text areas don't scroll back to the top line when clicked in anymore;
single line writables don't scroll back to the left either. When
reentering a text area from 'above', the caret appears at the top line
rather than 'somewhere further down'...

ARROWS_MOVE_OUT compile time option at the top of Forms.c defines whether
you must press Tab/Shift+Tab to move between writable fields in forms or
if up/down will drop out of them, though if keyboard control is on this
is enforced (or you get trapped inside the form!).

urlutils_filetype_from_url now uses MimeMap module.

If fetcher is told a page is text, it'll check for a filename extension and
may choose to use this instead (e.g. it may find it's HTML instead). This
is to try and get around duff servers... (e.g. http://www.batalarms.co.uk/).

Save dialogues shouldn't flicker when options that don't change the
filetype are selected (before, the draggable sprite was always reset for
each selection). Noticed the erroneous setting of a static variable in
SaveFile.c by a call to this by SaveObject.c, and so added a flag to
savefile_set_filetype to deal with this - would have been possible to get
the wrong filetype sent to applications or at best the wrong filetype
sprite in the dialogue without that.

The caret shouldn't jump out of a form back to the URL writable if the page
reformats now.

Table background colours now supported (as in the colour you see in the
border space if the cellspacing is large enough; this is as in MSIE, not
as in Navigator). Drawfile output routines updated accordingly.

Corrected erroneous use of wimpt_dx() / wimpt_dy() in a couple of places
in Images.c, which meant that (say) 1x1 images didn't work correctly in
medium resolution display modes.

Now have support for save as text (component ID and event 0x12) and save
as Draw (component ID and event 0x13) buttons. Dubious conditions for
greying and ungreying the print, save source and view source buttons and
menu options sorted out as part of implementing the same for the two new
buttons; added greying out of their associated menu items in passing.

Turned kerning on in draw file objects (does mean a rather heinous
increase in file size, but this is the only way to ensure the draw file
matches the visible page).

Comments before functions in SaveDraw.c are now complete and up to date.

Image and visit histories now generate a crude hash number to speed up
searching for items. It does give a speed increase, though it's a
disappointingly small one.

Issue of left/right margins and cellpaddings sorted out. Now have
redraw_left/right_margin for finding out the basic gap you must leave.
redraw_left/right_gap then gives any extra indentation for LI, BLOCKQUOTE
or whatever. The last two can be subtracted from the display width to
get an available page width for any section of text. Note that
redraw_left_gap replaces redraw_margin. The redraw_start_x function
uses the above to work out where a line's left hand edge should be,
taking account of left/right/centre alignment. HRs have been fixed now
(they were quite broken in v1.30, I think) based on this new model and
the behaviour of MSIE/NN 4.

Fixed width of cells with no contents - cell padding values wouldn't
have worked properly as the reformatter returns 0 rather than the left
hand margin size if given no stream.

Removed FM_Absolute flags for Font_Paint (spotted by DBrown) - sets bit
2, which is reserved...?

IMG width and height in % terms now works correctly; a % of available
width (after margins and indents) or height on the main page or for
a table cell, if the image lies in one. Because of the chicken-and-egg
problem with the latter, the cell must specify a width and/or height
for things to work properly. If this is not done, you'll usually end
up with a 1:1 scaled image (as in Navigator 4, rather than ending up
with no image or even no cell (!), as in MSIE 4).

HEIGHT attribute on a TABLE tag is supported, but only in a crude
fashion; the extra height (if there is any) is distributed over the
rows in a linear fashion. This is probably all you have to do in
practice, but I haven't checked. To maintain a notion of min/max
height as well as width would of course require a great deal more
work...

If using client pull to reload a page with a fragment ('...#name')
specified, then the reload wouldn't work on the same page; it'd just
jump to the fragment position. This won't happen if b->reloading is
set now (so works in conjunction with client pull on the same page
forcing a non-cached fetch). Similarly, if POSTing to such a URL,
a fetch will proceed (both these fixes done originally for
http://jupiter.beseen.com/chat/rooms/g/1678/).

browser_inherit split to browser_inherit and browser_inherit_post_data;
the code for the latter didn't clear any post_data in the child before
copying from the parent either, and could cause flex errors (now fixed).

Res file for Ursula ('Desktop' Browse) build tweaked - bits in the
font choices dialogue renamed, and button bar rearranged to hold the
new Save As Draw button. Other builds have had Save As Draw and
Save As Text buttons added, or not, depending upon availability of
suitable sprites, required UI simplicity, etc.

Now have:

  Browse$ChoicesFile
  Browse$ControlsFile
  Browse$ChoicesSave
  Browse$ControlsSave

(the last two are new) for loading and saving of the Choices or Controls
files. If unset, <App$Dir>.Choices or <App$Dir>.Controls will be set.
E.g., you could set Browse$ChoicesFile to be:

  <App$Dir>.Choices,Choices:WWW.(app).Choices

for loading and

  <Choices$Write>.WWW.(app).Choices

for saving. (The browser never saves Controls at the moment, so the
relevant variable above isn't effectively implemented, but could be
in future). Similarly, to support asymetric loading/saving of the Hotlist,
there are HotlistSave, HistorySave and ImageHistorySave entries in Choices
to complement HotlistPath, HistoryPath and ImageHistoryPath (which are used
for loading). save_save_choices will create directories as needed to obtain
the given path (and has also been fixed in various areas that hadn't been
tested out until now; e.g. zero termination of the AppName$ChoicesFile
variable expansion...). !Run[D] files updated appropriately.

Table widthing code rewritten. Slower, but a lot better on the whole.
Still has some problems - still needs a final 'make sure nothing is
below minimum width' scan, which it should be possible to do without.
No time to fix this at present!

The reformatter will now 'glue together' an LI token followed by any
non-LI token; so a bullet point followed by an item should not be able to
have a line break inserted after the bullet because of very tight width
constraints (it could before - yuk...).

'about:' brings up a page about the browser and any Plug-Ins, as with
Navigator (for example).

URI files support titles, as per spec. version 8. Saving a current
location to the Hotlist will thus give a sensible title now (unless
you're in a frame, so there's no title to get...). Of course, v1.00
files without a title still work.

Note that NOBR is *not* supported in this build and this combined with
the new table widther may cause problems on some sites (e.g. Microsoft's
home page!).

Check for WindowManager 3.97 and ensure Unicode$Path is set in all !Run[D] files, don't set the Alias$@PrintType_FF4 variable, and updated

Customer build ROM obey file variants. Various other changes to
the Run files for new module versions, updated paths to support
new positions of choices, hotlist and histories (see later), etc.

!Sprites[22] files hold small !app icons for some variants, and
an ic_browse sprite. Some variants now have a Sprites and Sprites22
file instead of just Sprites, with the former containing various
mode 12 or 15 specific sprites.

Text files dragged to the URL writable are treated as ANT URL files. This
relies on URLBarWrit (Toolbars.h) being a unique ID, which it should be,
but beware of the Hotlist and Choices numberspaces...

INPUT TYPE=BUTTON supported. Form items without a FORM tag are now shown
(as MSIE 4, but not NN 4).

'*', '-', '@', '_' and '.' are not escaped when submitting forms now. The
Web interface to the IMDb now works.

INPUT TYPE=HIDDEN items will not affect the line height anymore - so
http://www.hotmail.com/ now has correctly aligned writable icons, for
example. Similarly, TAG_FORM and TAG_FORM_END items could push up
line height and don't anymore.

HRs with a specified pixel width will now influence the size of a table
cell (they didn't before).

BRs now checked by tagno field when the browser needs to know something
was an actual BR tag rather than just a line break signal, and by the
style bit entry when only the indication of a line break is required.

Table widths of 0 or 0% are ignored.

Trace.c updated to report height and background fields in a table_stream.

fm_putsl() writes a terminator into the string; the Forms.c routines were
calling this for displaying INPUT TYPE=PASSWORD fields using the FE_PassCode
literal string (a line of stars). This write into a read only data area
would make the debugger fault the access. A local char array is now used
instead, to get round this (note the use of var[]=literal rather than
var[sizeof(literal)]; strcpy(var, literal) due to some weird compiler bug
that copies the wrong thing into 'var' under some (undefined...)
circumstances).

Text areas don't scroll back to the top line when clicked in anymore;
single line writables don't scroll back to the left either. When
reentering a text area from 'above', the caret appears at the top line
rather than 'somewhere further down'...

ARROWS_MOVE_OUT compile time option at the top of Forms.c defines whether
you must press Tab/Shift+Tab to move between writable fields in forms or
if up/down will drop out of them, though if keyboard control is on this
is enforced (or you get trapped inside the form!).

urlutils_filetype_from_url now uses MimeMap module.

If fetcher is told a page is text, it'll check for a filename extension and
may choose to use this instead (e.g. it may find it's HTML instead). This
is to try and get around duff servers... (e.g. http://www.batalarms.co.uk/).

Save dialogues shouldn't flicker when options that don't change the
filetype are selected (before, the draggable sprite was always reset for
each selection). Noticed the erroneous setting of a static variable in
SaveFile.c by a call to this by SaveObject.c, and so added a flag to
savefile_set_filetype to deal with this - would have been possible to get
the wrong filetype sent to applications or at best the wrong filetype
sprite in the dialogue without that.

The caret shouldn't jump out of a form back to the URL writable if the page
reformats now.

Table background colours now supported (as in the colour you see in the
border space if the cellspacing is large enough; this is as in MSIE, not
as in Navigator). Drawfile output routines updated accordingly.

Corrected erroneous use of wimpt_dx() / wimpt_dy() in a couple of places
in Images.c, which meant that (say) 1x1 images didn't work correctly in
medium resolution display modes.

Now have support for save as text (component ID and event 0x12) and save
as Draw (component ID and event 0x13) buttons. Dubious conditions for
greying and ungreying the print, save source and view source buttons and
menu options sorted out as part of implementing the same for the two new
buttons; added greying out of their associated menu items in passing.

Turned kerning on in draw file objects (does mean a rather heinous
increase in file size, but this is the only way to ensure the draw file
matches the visible page).

Comments before functions in SaveDraw.c are now complete and up to date.

Image and visit histories now generate a crude hash number to speed up
searching for items. It does give a speed increase, though it's a
disappointingly small one.

Issue of left/right margins and cellpaddings sorted out. Now have
redraw_left/right_margin for finding out the basic gap you must leave.
redraw_left/right_gap then gives any extra indentation for LI, BLOCKQUOTE
or whatever. The last two can be subtracted from the display width to
get an available page width for any section of text. Note that
redraw_left_gap replaces redraw_margin. The redraw_start_x function
uses the above to work out where a line's left hand edge should be,
taking account of left/right/centre alignment. HRs have been fixed now
(they were quite broken in v1.30, I think) based on this new model and
the behaviour of MSIE/NN 4.

Fixed width of cells with no contents - cell padding values wouldn't
have worked properly as the reformatter returns 0 rather than the left
hand margin size if given no stream.

Removed FM_Absolute flags for Font_Paint (spotted by DBrown) - sets bit
2, which is reserved...?

IMG width and height in % terms now works correctly; a % of available
width (after margins and indents) or height on the main page or for
a table cell, if the image lies in one. Because of the chicken-and-egg
problem with the latter, the cell must specify a width and/or height
for things to work properly. If this is not done, you'll usually end
up with a 1:1 scaled image (as in Navigator 4, rather than ending up
with no image or even no cell (!), as in MSIE 4).

HEIGHT attribute on a TABLE tag is supported, but only in a crude
fashion; the extra height (if there is any) is distributed over the
rows in a linear fashion. This is probably all you have to do in
practice, but I haven't checked. To maintain a notion of min/max
height as well as width would of course require a great deal more
work...

If using client pull to reload a page with a fragment ('...#name')
specified, then the reload wouldn't work on the same page; it'd just
jump to the fragment position. This won't happen if b->reloading is
set now (so works in conjunction with client pull on the same page
forcing a non-cached fetch). Similarly, if POSTing to such a URL,
a fetch will proceed (both these fixes done originally for
http://jupiter.beseen.com/chat/rooms/g/1678/).

browser_inherit split to browser_inherit and browser_inherit_post_data;
the code for the latter didn't clear any post_data in the child before
copying from the parent either, and could cause flex errors (now fixed).

Res file for Ursula ('Desktop' Browse) build tweaked - bits in the
font choices dialogue renamed, and button bar rearranged to hold the
new Save As Draw button. Other builds have had Save As Draw and
Save As Text buttons added, or not, depending upon availability of
suitable sprites, required UI simplicity, etc.

Now have:

  Browse$ChoicesFile
  Browse$ControlsFile
  Browse$ChoicesSave
  Browse$ControlsSave

(the last two are new) for loading and saving of the Choices or Controls
files. If unset, <App$Dir>.Choices or <App$Dir>.Controls will be set.
E.g., you could set Browse$ChoicesFile to be:

  <App$Dir>.Choices,Choices:WWW.(app).Choices

for loading and

  <Choices$Write>.WWW.(app).Choices

for saving. (The browser never saves Controls at the moment, so the
relevant variable above isn't effectively implemented, but could be
in future). Similarly, to support asymetric loading/saving of the Hotlist,
there are HotlistSave, HistorySave and ImageHistorySave entries in Choices
to complement HotlistPath, HistoryPath and ImageHistoryPath (which are used
for loading). save_save_choices will create directories as needed to obtain
the given path (and has also been fixed in various areas that hadn't been
tested out until now; e.g. zero termination of the AppName$ChoicesFile
variable expansion...). !Run[D] files updated appropriately.

Table widthing code rewritten. Slower, but a lot better on the whole.
Still has some problems - still needs a final 'make sure nothing is
below minimum width' scan, which it should be possible to do without.
No time to fix this at present!

The reformatter will now 'glue together' an LI token followed by any
non-LI token; so a bullet point followed by an item should not be able to
have a line break inserted after the bullet because of very tight width
constraints (it could before - yuk...).

'about:' brings up a page about the browser and any Plug-Ins, as with
Navigator (for example).

URI files support titles, as per spec. version 8. Saving a current
location to the Hotlist will thus give a sensible title now (unless
you're in a frame, so there's no title to get...). Of course, v1.00
files without a title still work.

Note that NOBR is *not* supported in this build and this combined with
the new table widther may cause problems on some sites (e.g. Microsoft's
home page!).

When converted from hours to seconds, all the Choices ended up with the same history expiry times - they weren't to start with, though (and aren't anymore) :-)

Not all resources are up to date in this check-in, and documentation both within source and stuff in 'Docs' is out of date or missing - I was very pushed for time on this one... Hopefully will do another 'tidy up' check-in before close on Friday; until then, beware of anything other than the Ursula (Desktop browser) build. Anyway...

Export As Draw done. As part of this, FONT SIZE and SUP / SUB adjustment
of font size is done in fm_token_font_info rather than fm_find_token_font.

Bullets and switches are plotted as indirected sprite items, rather than
indirected text + sprite items - this relied on being in a redraw loop to
pick the sprites up from the local pool (failed during printing).

URI files now have a LF line ending rather than CR... '*' recognised
as an empty field when loading via. RAM transfer now (only worked for
loading from disc before).

Gave placeholder bounding boxes 4 OS units more minimum extra gap
vertically and reduced horizontal addition to this value * 1.5, rather
than * 2 (see reformat_get_placeholder_size).

Background image tiling starts at ymax - h + 4, rather than ymax, so
there isn't the bottom line of pixels from the top tile always present
at the top of the window. The '+4' is for caution's sake.

Can now save a frame's HTML source, that of its parent or its ancestor,
and the same for the URI pointing to those documents - see Menus.h for
the relevant component IDs that should lead to the SaveFile dialogue.

Have hopefully fixed timeout = 0 values (i.e. 'forever') on things
like LinkTo; before, image fetches could override the state (so you'd
only ever see brief flickers of a given URL as the pointer went over
a link).

Save File dialogue will remember the state of option or radio buttons
for a given parent component origin and restore that state when the
dialogue is next opened from the same place (stops turning on saving
as a URL file also turning on 'save background images' for Draw file
export, etc.).

Use of a META tag to reload the *same* page now sets the 'reloading'
flag in the browser so that it doesn't go through a proxy - otherwise
pages which are meant to update periodically through client pull
don't work, as they keep coming out of the cache.

Can now handle images specifying just a width or height in the HTML
(other dimension is scaled accordingly, but note that the placeholder
size must still be 'dumb' until the image data comes in). An image
will now override an image history size entry for the same entry
with a different size.

Note that the 'Docs' documentation (possibly contrary to previous log messages) still hasn't been updated with the new SaveFile stuff, and function header comments have yet to be written for

SaveFile.c.

Fixed urlutils_pathname_to_url - OS_GSTrans doesn't like the same
input buffer as output buffer (fairly obvious, but I was living in
the hope of not having to duplicate the input path string).

Image history will not cache scrap file images anymore. Browser's
image handling library won't cross reference them either.

When dragging a single item from the hotlist to a Filer window, the
code now checks Ctrl - if held down, a URL file is written, else a
URI file. The state of any option buttons or radios in the last
Save File dialogue that was opened is no longer relevant...!

history_save_as_html could write out broken files when titles
for items in the History were not present. Fixed.

Hourglass switched on for hotlist and history saving as HTML;
hotlist_save_entries no longer closes the output file on error
(it should be done by the caller, since the caller is responsible
for opening the file and passing the FILE * pointer to
hotlist_save_entries).

There are a few known significant problems with this code but it's being checked in so the Choices can be worked on. Note that Res files etc. are not up to date across all builds. Progress is as follows...

Bug report prompted me to do this - now ignore <p> tags straight after
<li> tags, so '<ul><li><p>Some text' works as the author (or automatic
generator, more commonly) intended.

A <p> tag before a table will be acted upon now (it was ignored before).
Something like <li><p><table...> will give a line break and paragraph
space after the <li> despite the changes mentioned above, as in other browsers.
Both browsers differ from Navigator, where the table appears alongside
the <li> tag.

Multiple BR tags work as in MSIE / Navigator (they don't collapse to
zero height anymore).

For the above, line height (and so, <br><br> or <p> spacing) is now
calculated inside reformat_text_line_height, and is used with either
a token to get the text height at a given size (e.g. for general line
spacing or multiple BR tags) or NULL for normal size text (e.g. for
P spacing, though this value is in practice later scaled by 7/8ths in
reformat_check_height). Note this behaviour is exhibited by MSIE 4;
v3 gave two BRs the same spacing as one P (i.e. not font size
dependent).

Save dialogues can have an option button or couple of radios to
switch between various formats (e.g. URI or URL, sprite or original
format). See 'Docs.Notes' for more. The back-end to this is now
implemented (i.e. at the moment, save as URI or URL, save as original
image format). Note that when saving background images, a leafname
based on the original fetch URL is now offered rather than a generic
'Background'.

Internal URL scheme changed to be all lower case, so relativisation
through URL_Fetcher still makes sense... :-/

Holding down 'shift' when clicking on stop reverses the interpretation
of the Controls file 'StopWebServe' entry.

Fixed row / column count for exporting tables as text; fixed a few
bits and pieces of internal URL scheme stuff which got broken when
HTMLLib started using URL_Fetcher's relativisation.

Fixed some glitches in the modified status bar code (e.g. status inference wasn't working properly).

Shift+Toggle size always opened to not obscure the icon bar. If CMOS is
set to always show the icon bar, then Shift+Toggle size is meant to
reverse sense and open to absolute full size. It now does this.

!Run[D] files now require URL 0.22, HTTP 0.64, FTP 0.22, Gopher 0.08
and File 0.32.

Minor overhaul of 'Docs.Notes' (with 'Docs.User' similarly updated) to
include a few new bits and pieces.

Timeout values of 0 now mean 'forever'. Plug-in status messages now have
their own timeout setting. New Messages token 'Actv' for extra info when
a status message times out and the status line drops to 'Viewing' or
'Ready' when there is still a Busy state registered by the Plug-in.

Small Fetch windows don't become visible briefly for Plug-in fetches
when the fetch is complete (for SeeFetches:no, where these windows
should be hidden all the time).

WebServe may be controlled through the Browse front-end via.
Wimp_MAppControl reason code 4 (Wimp_MAppControl_Configure). Note the
renaming internally of 'WebServ' or 'WebServe' has been changed to
'Proxy' (with lower case equivalents where relevant); proxy name
and starting details come from the Messages file 'ProxyName' and
'ProxyComm' tokens. More in 'Docs.Notes'.

Res files updated for image history and PRE/TT font aspect ratio
choices. 'Don't expire' labels changed to 'Expire' (oops, didn't
notice the change in the development Browse's Res file when I
updated all of the others until now...).

When printing, Wimp_PlotIcon appears to ignore R4 and R5, plots
'somewhere' on the page, and tries to get the sprite from the global
pool. This latter part normally causes an error to be raised; though
on my machine I just get a corrupted error message. The Desktop font
gets lost at this point too. All have yet to be fixed; as an
interim work around, Wimp_PlotIcon objects are never drawn at all
if the global 'printing' flag is set.

Message_PlugIn_Busy. Plug-in code more robust when given invalid
browser instance handles by the plug-in.

Line spacing is now calculated on the basis of the normal style base serif
font, with all other fonts being forced into that line height. This does
mean that an unusually tall (say) sans serif font may get clipped. It
appears to be the only way to get around wildly different baseline
depths returned from the font metrics - you can't work out line spacing
based on each different font style; the line spacing will vary.

Table heighting (as opposed to widthing...) improved considerably; rowspan
can no longer cause very tall cells in odd places. Having trouble getting
rid of the single pixel breaks between vertically adjacent cells, though
I've not tried too hard. Widthing, though, seems fairly badly broken at
present... :-/

Set/clear of page_is_text flag made more robust (it looked as though there
was the potential for this to get stuck in a set state, though I've never
see the front-end behave in a manner which indicates this is the case).
The reformatter will now decrease leading if this flag is set (plain text
pages look daft with a line spacing that is OK for 'rich' text pages).
No reformatting is done if the page width changes by dragging on the
resize icon, though toggle size / full screen will still reformat even
if the contents are only text (browser needs to sort out various width
flags at this point).

Cut down on excessive redrawing when reformatting due to a change in
window dimensions is not done. If display_width hasn't changed, then no
redraw is needed. If this causes redraw problems, then whatever is
changing display_width needs investigating. It shouldn't be kludged
(basically) by forcing a redraw instead of a reformat.

TT/PRE/etc. text can now have a non-100% aspect ratio. 80-90% looks
best (ArcWeb, for example, uses 86%). New option 'TTAspect' in
the Choices files.

Debug builds link to a non-debug Unicode library now; stops stderr
being dumped to the bottom left of the screen if you've not redirected
it in the Run file.

RISC OS 3.1 seems to need more initial WimpSlot than later OS versions.
The 64 deep nested table set gives a 'No stack for trap handler' error
(which it really means in this case!) without 800K, even though 3.71
is happy with just 640K. So, the !Run file checks if Boot$OSVersion
is exactly 300, 310 or 311, and sets the WimpSlot accordingly.

!Run[D] files now require latest fetcher module versions (URL 0.21,
File 0.31, HTTP 0.58).

i)  There can be two sets of gadgets, one set for page history and another set
    for image history.

ii) There can be one set of gadgets for both settings and two radio buttons to
    select between them.

Only one of these may be present at the same time.  Currently the radio button
version is the one that is in place.  To change to the other version delete the
radio buttons and copy the gadgets from the ChoicesTMP window into the
appropriate window.

Significant reduction in number of times reformatter is called during
a table widthing session results in a dramatic speed increase for nested
tables (e.g. 64 deep with a paragraph of text in the deepest table takes
about two seconds to load with near-instantaneous subsequent reformats,
as opposed to taking optimistically 28 days for a 32 deep table!).
This code relies on a very big stack of assumptions...

Save as plain text implemented.

Choices, Messages and Res files brought up to date where necessary.
Version number taken to 1.28, 04-Dec-97 (so I don't forget later,
basically...).

Image history - sizes of images are remembered for future reference (if the sizes aren't specified in the HTML, they can be looked for in the image history instead to minimise reformatting requirements). Choices file options ImageHistoryPath, ImageExpiryAge, ImageMaxSize and

SaveImageHistory added to support this (all have a direct analogy to
the global History items of the same name after removing 'Image').

Text area items are now the correct height for the number of rows
specified in the HTML, don't scroll a line too early, and have the
caret placed at the start of the text when moved into from above
or at the end when moved into from below (rather than always at
the end, which was behaviour inherited from single line writables,
where this is desirable). The top of the text area is aligned to
the top of any line of text on the same line, with the text area
dropping below the text, rather than the bottom of the area matching
the text baseline and extending upwards.

Filename extensions for download files are only stripped if an
attempt to convert to a RISC OS filetype through the Mime Mapper module
does not return an error or Data (0xffd) filetype. '.cgi' is a special
case which is always stripped.

Altered heading styles - all are bold, none are italic, H3 is as big
as H2 was, H2 is a little larger, and others scale down to H6 being
the size as normal text (but, as I say, bold).

Sorted out tables and forms. We can just look for tagno=TAG_FORM, and
get rid of the wobbly form_flag; also discarded the redundant
reprocess_table flag in fetch_preprocess_token. Two separate forms
in consecutive table cells (for example) which used to fail - they
were submitted as one single form - will now work correctly.

Fixed nasty bug in FontManage.c where font size 7 would intermittently
fail. The stupid font sizes that it could ask the Font Manager for may
be responsible for the occasional Font Manager crashes that have been
noticed. Array for font sizes was declared as [Limits_FontSizes], but
indices 1 to Limits_FontSizes are actually used - so needed a '+ 1'
in the declaration... :-/

Replaced the case insensitive string comparison functions in Utils.c
with more efficient versions by S.Brodie.

MAXLENGTH specifier in INPUT tags is now supported. If unspecified or
specifically zero, the browser overrides and allows any length.

All hotlist_find_match calls wrapped in '#ifndef REMOTE_HOTLIST' compile time option, for Customer builds.

Cross referencing of images when the background colour is different - should
not do it for backgrounds, for e.g. alpha transparent PNGs would then fail.
This was implemented, but it turns out it affects *all* cross referencing!
Fixed for just background images.

As described in Docs.TagNames, the tag name "ahodgkin_127beta2" associated
with this checkin applies to everything *except* Choices.c. v1.27 beta 2
was build with the Choices file tagged "ahodgkin_127beta". The confusion
arises because Choices.c got independently updated and checked back in
before I checked in the v1.27 beta 2 changes myself.

Adjust-click on forwards/backwards buttons did not work in the intermediate
build, and now does.

Adjust-click on form submission buttons where the submit method is POST
will now work correctly, as the new view inherits the extradata block
of the old. Failure of this is signalled through
make_no_fetch_memory_error, code 16 (see updated Errors file in Docs).
Note the name change of extradata in this context; more details below.

The passing of forms POST data and extra headers for sending in an
HTTP request via. the URL module was all done through pointers into
flex blocks, and was therefore very unsafe. All relevant functions now
use pointers to pointers to the data.

To remove confusion on the umpteen uses of the word 'extradata', the field
in browser_data has been renamed to 'post_data'. The 'extradata' parameters
used within FetchPage.c were all disconnected from the extra header info /
form POST data stuff that extradata is usually associated with, and have
thus also been renamed, in this case to 'appnddata' (Append Data).

As well as X-NoProxy, the browser sends the 'proper' HTTP headers
Pragma:no-cache and Cache-Control:no-cache.

A redirection from a POST request was not handled correctly; despite
what HTTP specs say, you're supposed to use GET for the new URL. The
browser was, but when it chopped off the redundant header data in the
request didn't terminate it and left Content-Type in anyway...! Fixed.

Ctrl+Tab implemented - URL completion. Comes from the hotlist URLs,
hotlist titles, history hosts, paths, full URLs and lastly titles.
See code comments for more (history_find_match, hotlist_find_match).

TableSupport option added to Choices; it is read, can be set by the
front-end, but doesn't actually do anything else yet.

Reversed Choices' semantics on 'don't expire by...' for History. Added
'needs_redraw' flag to choices_get_contents so that, for example, if the
table border types change, browsers get redrawn.