ncurses has had a bug where mouse support is completely disabled if the terminfo
didn’t have kmous=\E[M, *or*, the terminfo *name* contained ‘xterm’.
This appears to have been fixed.
Thus, change kmous to \E[<, and set xm/XM accordingly. With this, ncurses
application will use the SGR mouse reporting mode, instead of the legacy
reporting mode.
These extensions are used by tmux and neovim, in order to make use
of 24-bit colors without facing the problems that plague the `RGB`
capability.
This should allow 24-bit colors to work "out of the box" in tmux,
without the usual workaround of adding:
set-option -ga terminal-overrides ",foot*:Tc"
...to ~/.tmux.conf.
See also:
* 18fe2e8dfa (commitcomment-31373962)
* f83c25942d/runtime/doc/term.txt (L123-L139)
* b1a8c0fe02/CHANGES (L988-L989)Closes#615
Well this is embarrassing; the sub-parameter versions of the 38/48 SGR
escapes all required an extra ‘:2’ that wasn’t supposed to be there,
causing all the other sub-parameters to be shifted one step to the
right.
That is, foot expected e.g. 38:2:2:r:g:b, or 38:2:5:idx when the
correct sequences are 38:2:cs:r:g:b and 38:5:idx.
I.e. I mixed up the color-space ID (cs) of 38:2 with *type* of color:
RGB or indexed.
In addition to fixing this, this patch also adds support for a
“bastard” version of the sub-parameter based RGB escapes, where the
color-space identifier has been left out: e.g. 38:2:r:g:b. This
sequence is invalid, but applications tend to “forget” the color-space
ID...
This implements OSC 4, 10, 11 - change <color>/foreground/background,
and their corresponding 'query' variant (which was already implemented
for OSC 10/11).
It also implements OSC 104, 110, 111 - reset
<color>/foreground/background.
Set corresponding terminfo entries to signal this support to clients.
I.e. it issues a \E[2 q regardless of what we've configured the
terminfo Se entry to.
So, make \E[2 q mean "the user configured cursor style" (which
defaults to 'block').
According to the specs, \E[0 q means a blinking block cursor. However,
since it also states that \E[1 q *also* is a blinking block cursor,
and that it is the default, *and* given that fact that parameter-less
CSIs typically means "reset", let's make it mean "reset to the user
configured cursor style".
Use our own escape sequence for the 'flash' terminfo entry.
Implemented by arming a timer FD and setting a boolean that indicates
we're currently "flashing".
The renderer draws a semi-transparent yellowish layer over the entire
window when "flashing" is active.
22;0|1|2t pushes the current window title/icon to the stack, while 23
pops it.
The second parameter, 0|1|2 has the following meaning:
0 - push/pop icon+title
1 - push/pop icon
2 - push/pop title
