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csi: implement DECRQM (DEC modes), for real

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Previously, we always returned ‘2 - reset’, instead of the actual
state of the requested mode.
This commit is contained in:
Daniel Eklöf 2020-12-16 13:57:40 +01:00
parent 37f036f9e9
commit db097891f2
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2 changed files with 46 additions and 1 deletions
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2
CHANGELOG.md
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@ -113,6 +113,8 @@ means foot can be PGO:d in e.g. sandboxed build scripts. See
* SGR 21 no longer disables **bold**. According to ECMA-48, SGR 21 is
_”double underline_”. Foot does not (yet) implement that, but that’s
no reason to implement a non-standard behavior.
* `DECRQM` now returns actual state of the requested mode, instead of
always returning `2`.
### Deprecated

45
csi.c
View file

@ -561,6 +561,42 @@ decrst(struct terminal *term, unsigned param)
decset_decrst(term, param, false);
}
static bool
decrqm(const struct terminal *term, unsigned param, bool *enabled)
{
switch (param) {
case 1: *enabled = term->cursor_keys_mode == CURSOR_KEYS_APPLICATION; return true;
case 3: *enabled = false; return true;
case 4: *enabled = false; return true;
case 5: *enabled = term->reverse; return true;
case 6: *enabled = term->origin; return true;
case 7: *enabled = term->auto_margin; return true;
case 9: *enabled = false; /* term->mouse_tracking == MOUSE_X10; */ return true;
case 12: *enabled = term->cursor_blink.decset; return true;
case 25: *enabled = !term->hide_cursor; return true;
case 45: *enabled = term->reverse_wrap; return true;
case 1000: *enabled = term->mouse_tracking == MOUSE_CLICK; return true;
case 1001: *enabled = false; return true;
case 1002: *enabled = term->mouse_tracking == MOUSE_DRAG; return true;
case 1003: *enabled = term->mouse_tracking == MOUSE_MOTION; return true;
case 1004: *enabled = term->focus_events; return true;
case 1005: *enabled = false; /* term->mouse_reporting == MOUSE_UTF8; */ return true;
case 1006: *enabled = term->mouse_reporting == MOUSE_SGR; return true;
case 1007: *enabled = term->alt_scrolling; return true;
case 1015: *enabled = term->mouse_reporting == MOUSE_URXVT; return true;
case 1034: *enabled = term->meta.eight_bit; return true;
case 1035: *enabled = term->num_lock_modifier; return true;
case 1036: *enabled = term->meta.esc_prefix; return true;
case 1042: *enabled = term->bell_action_enabled; return true;
case 1049: *enabled = term->grid == &term->alt; return true;
case 2004: *enabled = term->bracketed_paste; return true;
case 27127: *enabled = term->modify_escape_key; return true;
case 737769: *enabled = term_ime_is_enabled(term); return true;
}
return false;
}
static void
xtsave(struct terminal *term, unsigned param)
{
@ -1359,8 +1395,15 @@ csi_dispatch(struct terminal *term, uint8_t final)
* 3 - permanently set
* 4 - permantently reset
*/
bool enabled;
unsigned value;
if (decrqm(term, param, &enabled))
value = enabled ? 1 : 2;
else
value = 0;
char reply[32];
snprintf(reply, sizeof(reply), "\033[?%u;2$y", param);
snprintf(reply, sizeof(reply), "\033[?%u;%u$y", param, value);
term_to_slave(term, reply, strlen(reply));
break;
}