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Fix clearing abandoned line with VTE (#4243)

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* Fix clearing abandoned line with VTE

With VTE-based terminals, resizing currently causes multi-line prompts
to go weird.

This changes the sequence we use to clear the line to one suggested by
a VTE
developer (https://bugzilla.gnome.org/show_bug.cgi?id=763390#c4).

It changes nothing in konsole 17.04.3 and urxvt 9.22, but they already
work.

Note that this does not fix the case where output did not end in a
newline, but that doesn't seem to be up to us. Also, it only affects
those lines.

Fixes #2320.

* Use terminfo definition instead of hardcoding

Thanks to @ixjlyons.
This commit is contained in:
Fabian Homborg 2017-08-10 00:37:32 +02:00 committed by GitHub
parent 11f5bbf83d
commit 09cb31a172
1 changed files with 1 additions and 1 deletions
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2
src/screen.cpp
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@ -1287,7 +1287,7 @@ void s_reset(screen_t *s, screen_reset_mode_t mode) {
// line above your prompt. This doesn't make a difference in normal usage, but copying and
// pasting your terminal log becomes a pain. This commit clears that line, making it an
// actual empty line.
abandon_line_string.append(L"\e[2K");
abandon_line_string.append(str2wcstring(clr_eol));
const std::string narrow_abandon_line_string = wcs2string(abandon_line_string);
write_loop(STDOUT_FILENO, narrow_abandon_line_string.c_str(),