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vt: fix SS2/SS3 escape sequences to act correctly as single shifts

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These sequences are supposed to affect the next printable ASCII
character and then reset to the previous character set, but before
this commit they were behaving like locking shifts.
This commit is contained in:
Craig Barnes 2021-06-08 21:09:40 +01:00
parent e72e8b1b8e
commit a2c9c56f19
4 changed files with 22 additions and 4 deletions
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16
terminal.c
View file

@ -2839,6 +2839,14 @@ ascii_printer_fast(struct terminal *term, wchar_t wc)
xassert(!term->grid->cursor.lcf);
}
static void
ascii_printer_single_shift(struct terminal *term, wchar_t wc)
{
ascii_printer_generic(term, wc);
term->charsets.selected = term->charsets.saved;
term_update_ascii_printer(term);
}
void
term_update_ascii_printer(struct terminal *term)
{
@ -2860,6 +2868,14 @@ term_update_ascii_printer(struct terminal *term)
term->ascii_printer = new_printer;
}
void
term_set_single_shift_ascii_printer(struct terminal *term, int selected)
{
term->charsets.saved = term->charsets.selected;
term->charsets.selected = selected;
term->ascii_printer = &ascii_printer_single_shift;
}
enum term_surface
term_surface_kind(const struct terminal *term, const struct wl_surface *surface)
{