From 211964d56ee00a7d46e251cbc150afb79138ae37 Mon Sep 17 00:00:00 2001
From: Hiltjo Posthuma <hiltjo@codemadness.org>
Date: Tue, 7 Feb 2023 20:00:59 +0100
Subject: ignore C1 control characters in UTF-8 mode
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
---
st.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/st.c b/st.c
index 49357cc..134e724 100644
--- a/st.c
+++ b/st.c
@@ -2422,6 +2422,9 @@ check_control_code:
* they must not cause conflicts with sequences.
*/
if (control) {
+ /* in UTF-8 mode ignore handling C1 control characters */
+ if (IS_SET(MODE_UTF8) && ISCONTROLC1(u))
+ return;
tcontrolcode(u);
/*
* control codes are not shown ever
--
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