In the legacy mouse reporting mode, line and column numbers are
limited to 223 (255-32). In case the current coordinate falls outside
this, simply ignore it (don't report it).
When support was added for DECOM (absolute/relative row addressing), a
small but noticeable (~3.5%) performance regression was introduced.
Try to improve the situation by simplifying the relative-to-absolute
conversion; only the row needs to be transformed.
* It takes a parameter, that indicates the number of tab stops to move
through
* Use the tab stops defined in the tab stops list, not hard coded mod
8 columns.
There were actually two bugs here:
* When checking for a tab stop, make sure the new tab stop is at a
different column. Otherwise you can't tab away from a tab stop.
* When there aren't any tab stops configured, or when we're already
beyond the last tab stop, then tab to the last column (at least I
think that's what we're supposed to do).
The default is absolute mode, where 0,0 is the upper left corner of
the screen.
In relative mode, the origin is relative the top scroll margin.
Internally, we always track the current cursor position in absolute
mode. Every time we the client *sets* or *queries* the cursor position
in relative mode, we translate it to absolute.
* Client terminal initialization data is now received
asynchronously. To facilitate this, a couple of minor changes to the
protocol was made:
- The client now starts with sending a 4-byte unsigned integer
with the *total* size of the initialization data (*not*
including the size field itself.
- Strings (TERM variable + argv) are now sent NULL-terminated
* The server allocates a single buffer, and fills it
asynchronously. When full (as indicated by the initial 'total size'
integer), we parse it (taking care not to read outside boundaries
etc, and verifies the lengths (of the TERM variable and argv array)
indicated by the client matches the actual lengths of the strings
received.
* The server now ignores 'unexpected' data received from the client,
after the terminal has been instantiated.
