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vt: ignore 0x7f (DEL) in ground state

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This ensures *all* bytes mapped to action_print() have wcwidth == 1.

DEL has wcwidth == -1, and would thus have been ignored by
term_print() anwyway.
This commit is contained in:
Daniel Eklöf 2020-07-16 08:01:37 +02:00
parent 6183f7f64a
commit 9508804b18
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1 changed files with 4 additions and 1 deletions
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5
vt.c
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@ -223,6 +223,8 @@ action_print(struct terminal *term, uint8_t c)
L'│', L'≤', L'≥', L'π', L'≠', L'£', L'·', /* x - ~ */
};
assert(wcwidth(c) == 1);
if (unlikely(term->charsets.set[term->charsets.selected] == CHARSET_GRAPHIC) &&
c >= 0x60 && c <= 0x7e)
{
@ -739,7 +741,8 @@ state_ground_switch(struct terminal *term, uint8_t data)
case 0x19:
case 0x1c ... 0x1f: action_execute(term, data); return STATE_GROUND;
case 0x20 ... 0x7f: action_print(term, data); return STATE_GROUND;
/* modified from 0x20..0x7f to 0x20..0x7e, since 0x7f is DEL, which is a zero-width character */
case 0x20 ... 0x7e: action_print(term, data); return STATE_GROUND;
case 0xc2 ... 0xdf: action_utf8_21(term, data); return STATE_UTF8_21;
case 0xe0 ... 0xef: action_utf8_31(term, data); return STATE_UTF8_31;