When using indexed colors (i.e. SGR 30/40/90/100), store the index
into the cell’s fg/bg attributes, not the actual color value.
This has a couple of consequences:
Color table lookup is now done when rendering. This means a rendered
cell will always reflect the *current* color table, not the color
table that was in use when the cell was printed to.
This simplifies the OSC-4/104 logic, since we no longer need to update
the grid - we just have to damage it to trigger rendering.
Furthermore, this change simplifies the VT parsing, since we no longer
need to do any memory loads (except loading the SGR parameter values),
only writes.
When going through the cached buffers, we only set buffer->busy on
the *first* re-usable buffer we found.
In some cases, we will find more than one re-usable buffer. In this
case, we select the “youngest” one (i.e the one most recently used, in
the hopes that we can use damage tracking instead of re-rendering the
entire buffer).
If the “current” buffer is younger than the previously detected,
re-usable, buffer, then we unref:ed the previously selected buffer,
and replaced it with the current one.
But, we did not sanitize it. That is, we did not:
* set buffer->busy
* clear its dirty region
* clear its scroll damage
That buffer would eventually get rendered to, and committed to the
compositor. Later, the compositor would free it. And there, in our
buffer_release() callback, we’d assert that buffer->busy was
set. And fail.
Closes#844
When handling “generic” keys (i.e. keys not in the Kitty keymap), we
use the pressed key’s Unicode codepoint as “key” in the kitty CSI.
If we failed to convert the XKB symbol to a Unicode codepoint, we used
to (before this patch), fallback to using the XKB symbol as is.
This can never be correct... and it caused us to emit a meaningless
CSI for XKB_KEY_ISO_Next_Group, which confused e.g. Kakoune.
These are new in version 4 of the wl_output interface (first included
in wayland-1.20).
This allows us to get the name and description of the outputs, also on
compositors without the XDG output interface.
This makes us slightly more resilient against a missing XDG output
interface.
We use the “real” (the physical) dimensions, combined with the scaling
factor, to estimate the logical dimensions.
This works out correctly with non-fractional scaling, but not
otherwise.
