Now that both tllist and fcft use meson.override_dependency(), we can
use the simpler form of fallback in our dependency call().
This requires meson >= 0.53, tllist >= 1.0.1 and fcft >= 2.0.0
At this point, we're not mapped, but we should have all the outputs
initialized. Which means we can at least guess which subpixel mode to
use.
If that turns out to be wrong, something we'll detect when we're
mapped, we'll just have to re-render.
These lists are typically empty when we destroy the terminal. However,
if we had queued up damage, and then manage to destroy the terminal
instance before the last changes were rendered, then they will *not*
be empty.
Found by the address sanitizer.
A lot of the escape sequences on the "CSI Ps ; Ps ; Ps t" form are
expected to return a reply. Thus, not having these implemented means
we will hang if the client sends these escapes.
Not all of these escapes can be meaningfully implemented on Wayland,
and thus this implementation is best effort.
We now support the following escapes:
* 11t - report if window is iconified (always replies "no")
* 13t - report window position (always replies 0,0)
* 13;2t - report text area position (replies with margins, since we
cannot get the window's position)
* 14t - report text area size, in pixels
* 14;2t - report window size, in pixels
* 15t - report screen size, in pixels
* 16t - report cell size, in pixels
* 18t - report text area size, in cells
* 19t - report screen size, in cells
While it *looked* like the selection was working before, it really
wasn't.
When rendering, we're looking at the cells' attributes to determine
whether they have been selected or not.
When copying text however, we use the terminal's 'selection' state,
which consists of 'start' and 'end' coordinates.
These need to be translated when reflowing text.
Define a list of "tracking points" - coordinates that should be
translated while reflowing.
Add the cursor coordinates to this list.
When a coordinate have been translated, it is removed from the
list. This means we don't have to create a copy of the 'cursor'
coordinate struct.
