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ignore C1 control characters in UTF-8 mode

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Ignore processing and printing C1 control characters in UTF-8 mode.
These are in the range: 0x80 - 0x9f.

By default in st the mode is set to UTF-8.

This matches more the behaviour of xterm with the options -u8 or +u8 also.
Also see the xterm resource "allowC1Printable".

Let me know if this breaks something, in most cases I don't think so.

As usual a very good reference is:
https://invisible-island.net/xterm/ctlseqs/ctlseqs.html
This commit is contained in:
Hiltjo Posthuma 2023-02-07 20:00:59 +01:00
parent f17abd25b3
commit 211964d56e
1 changed files with 3 additions and 0 deletions
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3
st.c
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@ -2422,6 +2422,9 @@ check_control_code:
* they must not cause conflicts with sequences. * they must not cause conflicts with sequences.
*/ */
if (control) { if (control) {
/* in UTF-8 mode ignore handling C1 control characters */
if (IS_SET(MODE_UTF8) && ISCONTROLC1(u))
return;
tcontrolcode(u); tcontrolcode(u);
/* /*
* control codes are not shown ever * control codes are not shown ever