GitLab

* When a window was reopened such that the iconise button replaces the toggle-size icon (or vice versa), the Wimp now spots that the relevant rectangle needs redrawing.

* When a window stays put, but scrolls in one direction, the unaffected
  scrollbar is no longer redrawn, in order to reduce flicker. This was
  coded, but broken, on Risc PC Wimps, but doubly broken in the Nested Wimps
  - and the flicker was particularly noticeable with Ursula's cached screen
  enabled...
* Fixed nasty bug in nested window open flushing: this seems to have been
  caused by faulty behaviour of addsub when passed a rectangle where cx0>cx1
  and/or cy0>cy1. Filtering out such cases from subrect calls in
  (old)subtract_openingchildren prevents this from being the case. The old
  behaviour was trashing the borderrects list, which resulted in the loss of
  the invalidrects list, causing full-screen redraw when a window containing
  seven (or more) child windows was scrolled or resized.
* Fixed a bug introduced in last version, whereby program error and watchdog
  error box text was overwritten with "WindowManager:Sprites22".
* Supported long pathnames for *IconSprites.