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input: consume and ignore the raw escape sequences for F17 to F24 

When --rawsequences is used, consume the full escape sequences for
the F17 to F24 function keys (on xterm-compatible terminals and on
the Linux console), to prevent them entering junk into the buffer.

This fixes https://savannah.gnu.org/bugs/?57483.
This commit is contained in:
Benno Schulenberg 2019-12-26 13:53:48 +01:00
parent 72645b160d
commit 4dcbd40c49
1 changed files with 10 additions and 2 deletions
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12
src/winio.c
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@ -1068,7 +1068,9 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
#endif
}
/* ->->->->->->-> */
}
} else if (length > 5 && seq[3] == ';' && seq[5] == '~')
/* Esc [ 1 n ; 2 ~ == F17...F20 on some terminals. */
*consumed = 6;
break;
case '2':
if (length > 3 && seq[3] == '~') {
@ -1100,6 +1102,9 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
else if (length > 4 && seq[2] == ';' && seq[4] == '~')
/* Esc [ 2 ; x ~ == modified Insert on xterm. */
*consumed = 5;
else if (length > 5 && seq[3] == ';' && seq[5] == '~')
/* Esc [ 2 n ; 2 ~ == F21...F24 on some terminals. */
*consumed = 6;
break;
case '3': /* Esc [ 3 ~ == Delete on VT220/VT320/
* Linux console/xterm/Terminal. */
@ -1132,6 +1137,9 @@ int convert_sequence(const int *seq, size_t length, int *consumed)
if (length > 2 && seq[2] == '@')
/* Esc [ 3 @ == Ctrl-Shift-Delete on urxvt. */
return controlshiftdelete;
if (length > 3 && seq[3] == '~')
/* Esc [ 3 n ~ == F17...F20 on some terminals. */
*consumed = 4;
#endif
break;
case '4': /* Esc [ 4 ~ == End on VT220/VT320/
@ -1321,7 +1329,7 @@ int parse_escape_sequence(WINDOW *win, int kbinput)
* (the longest possible escape sequence) from the keybuffer and
* translate the sequence into its corresponding keycode. */
put_back(kbinput);
length = (key_buffer_len < 5 ? key_buffer_len : 5);
length = (key_buffer_len < 6 ? key_buffer_len : 6);
sequence = get_input(NULL, length);
retval = convert_sequence(sequence, length, &consumed);