When we're handling the initial set of globals, the data-device and
primary-selection-device objects may, or may not be registered before
the seat(s).
We need to handle both cases.
When adding a seat, instantiate the data-device and
primary-selection-device **if available**.
When adding the device objects, instantiate them on **all** currently
available seats.
Remove assertion that row be less than the scrolling region end. The
cursor may in fact be *inside* the margin.
Inside the margin, content never scrolls, but we must make sure we
don't move the cursor outside the grid.
The pipe command can contain almost all printable characters. In
particular, we can expect it to contain '='.
Having the pipe command as part of the key breaks the key/value
splitting.
Change it so that it is instead an optional initial part of the value,
enclosed in '[]'.
I.e. instead of
pipe-visible:cmd=binding
we now need to write
pipe-visible=[cmd] binding
A key binding may now have an optional ':<cmd>' string appended to the
key.
This is intended to be used like so:
pipe-scrollback:sh -c "cat > file"=Print
TODO: we still only allow one *action*. Meaning you still cannot
specify multiple pipe-scrollback bindings, for example.
This allows us to safely call extract_finish() when extract_one()
failed, and we'll get the expected result; false, indicating
extract_finish() failed.
As that breaks e.g. selection marking (SPACER cells didn't get
inverted when rendered).
Instead, skip them in extract_one() only. I.e. when copying text from
the grid.
Ignore *old* cells containing spacers.
Pad new grid with spacers if a multi-column character doesn't fit at
the end of a line.
Insert spacers after a multi-column character.
When printing a multi-column character, write CELL_MULT_COL_SPACER
instead of '0' to both padding cells (when character doesn't fit at
the end of the line), and to the cells following the actual character.
When printing a multi-column character at the end of the line, and it
doesn't fit, we currently insert a forced line-wrap. This means the
last character(s) on the previous line will be empty, followed by a
multi-column character in the first cell on the next line.
Without special code to handle this, the selection text extraction
code will insert a hard newline, since this is normally the correct
thing to do.
Add a TODO, to consider writing a special place holder value to these
padding cells.
