From 21d434d2dbadf91d7bd2089ca1ca92c2d918b114 Mon Sep 17 00:00:00 2001 From: "Avi Halachmi (:avih)" Date: Thu, 19 Aug 2021 01:19:55 +0300 Subject: terminal-unix: identify and ignore unknown CSI sequences If an unknown ESC sequence is detected where an ASCII char follows the ESC, mpv interprets it as ALT+, which is the traditional terminal encoding of ALT+letter. However, if is '[' then it's a CSI sequence which continues after the '[', and has its own termination rules (can be many chars). Previously, mpv interpreted unknown CSI sequences as (incorrect) ALT+[ followed by (incorrect) "keys" from the rest of the sequence. In this commit, if a unknown CSI sequence is detected, mpv ignores exactly the complete sequence. --- osdep/terminal-unix.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/osdep/terminal-unix.c b/osdep/terminal-unix.c index 1e7d874028..adcf3a3540 100644 --- a/osdep/terminal-unix.c +++ b/osdep/terminal-unix.c @@ -221,6 +221,17 @@ static void process_input(struct input_ctx *input_ctx, bool timeout) if (!match) { // normal or unknown key int mods = 0; if (buf.b[0] == '\033') { + if (buf.len > 1 && buf.b[1] == '[') { + // unknown CSI sequence. wait till it completes + for (int i = 2; i < buf.len; i++) { + if (buf.b[i] >= 0x40 && buf.b[i] <= 0x7E) { + skip_buf(&buf, i+1); + continue; // complete - throw it away + } + } + goto read_more; // not yet complete + } + // non-CSI esc sequence skip_buf(&buf, 1); if (buf.len > 0 && buf.b[0] > 0 && buf.b[0] < 127) { // meta+normal key -- cgit v1.2.3