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Created by Andy Vawer@avawerDeveloper
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Fix for Bugs Ticket #408: Edit magic char search for \n results in an...

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rlib/c/txtscrap
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static txt owner = 0;
static BOOL txtscrap_selection_zerowidth(txt t, txt_index from, txt_index to)
{
/*Return TRUE if the selection is just newlines (ie zero-width), FALSE if any other chars*/
for ( ; from < to; from++)
if (txt_charat(t, from) != '\n') return FALSE;
return TRUE;
}
void txtscrap_setselect(txt t, txt_index from, txt_index to)
{
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if (owner != (txt) NULL && owner != t)
txt_setselect(owner, 0, 0);
txt_setselect(t, from, to);
txt_setcharoptions(t, txt_CARET, from==to ? txt_CARET : 0);
txt_setcharoptions(t, txt_CARET, from==to ? txt_CARET : txtscrap_selection_zerowidth(t, from, to) * txt_CARET);
owner = t;
}
}
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