We only updated the grid for OSC 4 - Set color <idx>. But we did *not*
do it for 104 (reset color <idx>), 10 - set default foreground, 11 -
set default background, 110 - reset default foreground, or 111 - reset
default background.
E.g. only set mouse reporting to NONE, if mouse reporting mode is SGR
and an DECRST SGR is issued.
Do *not* reset the mouse mode if e.g. mouse reporting mode is SGR and
an DECRST URXVT is issued.
Shift is used to enable selection when the client application is
grabbing the mouse.
As such, mouse bindings *never* have Shift as a modifier, but should
still trigger when Shift is being pressed.
We shouldn't start or modify a selection if selection isn't
possible (i.e. client application is grabbing the mouse, and user
isn't holding Shift).
We also shouldn't start or modify a selection if the pointer is
outside the grid (updating an ongoing selection on motion events is an
exception to this).
Check for ongoing selection, and *clear* it before bailing out due to
the selection not having an end-point.
This fixes an issue where a selection was kept as ongoing, even though
the button had been released. Typically triggered by clicking without
moving the mouse; this started a new selection, then (tried to)
finalize it, but failed since the selection didn't have an end-point.
This extends the "normal" bind action enum with mouse specific
actions.
When parsing key bindings, we only check up to the last valid keyboard
binding, while mouse bindings support *both* key actions and mouse
actions.
The new actions are:
* select-begin: starts an interactive selection
* select-extend: interactively extend an existing selection
* select-word: select word under cursor
* select-word-whitespace: select word under cursor, where the only
word separating characters are whitespace characters.
The old hard-coded selection "bindings" have been converted to instead
use these actions, via default bindings added to the configuration.
