Re: [patch v2] Fix cyrillic symbols show in tui

[Tom Tromey <tom@tromey.com>]

>>>>> "Tom" == Tom Tromey <tom@tromey.com> writes:

Tom> Perhaps this code needs convert to wchar_t and back again.  That seems
Tom> pretty unfortunate though.  The other alternative would be if there's a
Tom> way to change tui_puts so that over-long lines are (optionally)
Tom> truncated rather than overflowing.  I don't know if curses offers that
Tom> or not.

I researched this a little.

Curses doesn't directly support control over this.  Bleah curses.

However, it seems it can maybe be accomplished anyway.  A few
approaches.

1. Use waddnstr or mvaddnstr to limit how many characters are emitted.
   To do this, I suppose that do_tui_putc would have to be reimplemented
   (to fix the \t hack), and also tui_puts_internal would have to be
   changed so that it does not emit a single character at a time.
   Instead, tui_puts_internal would be changed to emit strings of
   characters (limited to the remaining horizontal space), then check
   the column to see where the cursor ended up.

2. Use winsstr to insert characters rather than append them.  In theory
   this should cause characters to the right to be pushed off and
   disappear -- not wrap.  (The ncurses docs say this but as with all
   things curses, one must try it.)  For this to work we'd have to clear
   to the end of the line before emitting things.

3. Use pads instead of windows, and make sure the pads are sized so that
   wrapping cannot occur.  This would be a somewhat larger change.  I
   suppose it would have to be limited to the source window, since it
   wouldn't really be possible for the assembly window.

I'm not sure if #1 or #2 is more desirable.

Tom