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vt: add commented out cases for 8-bit C1 control characters

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XTerm seems to ignore these when in UTF-8 mode. Since we _only_
support UTF-8, we don't need to recognize these control characters at
all.

However, it may be good to have them here for reference. So add them,
but commented out, along with their corresponding 7-bit
versions (which we _do_ recognize and implement).
This commit is contained in:
Daniel Eklöf 2019-12-14 20:28:05 +01:00
parent afc8ed97a6
commit 2c4af8728d
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1 changed files with 35 additions and 0 deletions
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35
vt.c
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@ -850,6 +850,11 @@ action(struct terminal *term, enum action _action, uint8_t c)
case ACTION_EXECUTE: case ACTION_EXECUTE:
LOG_DBG("execute: 0x%02x", c); LOG_DBG("execute: 0x%02x", c);
switch (c) { switch (c) {
/*
* 7-bit C0 control characters
*/
case '\0': case '\0':
break; break;
@ -903,6 +908,36 @@ action(struct terminal *term, enum action _action, uint8_t c)
term->charsets.selected = 0; /* G0 */ term->charsets.selected = 0; /* G0 */
break; break;
/*
* 8-bit C1 control characters
*
* We ignore these, but keep them here for reference, along
* with their corresponding 7-bit variants.
*
* As far as I can tell, XTerm also ignores these _when in
* UTF-8 mode_. Which would be the normal mode of operation
* these days. And since we _only_ support UTF-8...
*/
#if 0
case '\x84': /* IND -> ESC D */
case '\x85': /* NEL -> ESC E */
case '\x88': /* Tab Set -> ESC H */
case '\x8d': /* RI -> ESC M */
case '\x8e': /* SS2 -> ESC N */
case '\x8f': /* SS3 -> ESC O */
case '\x90': /* DCS -> ESC P */
case '\x96': /* SPA -> ESC V */
case '\x97': /* EPA -> ESC W */
case '\x98': /* SOS -> ESC X */
case '\x9a': /* DECID -> ESC Z (obsolete form of CSI c) */
case '\x9b': /* CSI -> ESC [ */
case '\x9c': /* ST -> ESC \ */
case '\x9d': /* OSC -> ESC ] */
case '\x9e': /* PM -> ESC ^ */
case '\x9f': /* APC -> ESC _ */
break;
#endif
default: default:
break; break;
} }