Currently the new "apt" command-line tool relies on them (when it installs packages, it keeps a progress bar at the bottom, but shows a log above), although they've recently patched it to use the more widely-available ESC 7/8 (though the patch is not yet in sid). I chose SCP/RCP, because ANSI.SYS called them Save/Restore Cursor Position, and everywhere seems to refer to them by that acronym (they're even listed on Wikipedia in the table of codes, despite not being in ECMA-48, nor being implemented by the VT100).
James > On 12 Sep 2015, at 10:15, Samuel Thibault <samuel.thiba...@gnu.org> wrote: > > Hello, > > James Clarke, le Sat 12 Sep 2015 00:42:05 +0100, a écrit : >> This adds support for CSI s and u, which are equivalent to ESC 7 and 8, >> saving/restoring the cursor position. > > Just curious: in which case did you see it a problem, or is it just for > completeness? (which can always become convenient anyway) > >> + case 's': /* ANSI.SYS: Save cursor and attributes. */ >> + /* Save cursor position: <scp>. */ > > Why scp? AIUI from terminfo(5), scp is the capname for set_color_pair, > the tcap code for save cursor position is sc. > >> + display->cursor.saved_x = user->cursor.col; >> + display->cursor.saved_y = user->cursor.row; >> + break; >> + case 'u': /* ANSI.SYS: Restore cursor and attributes. */ >> + /* Restore cursor position: <rcp>. */ >> + user->cursor.col = display->cursor.saved_x; >> + user->cursor.row = display->cursor.saved_y; >> + /* In case the screen was larger before: */ >> + limit_cursor (display); >> + break; >> case 'l': >> /* Reset mode. */ >> for (i = 0; i < parse->nparams; i++) >> -- >> 2.5.1 >> >>
