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| author | Oliver Kiddle <opk@zsh.org> | 2025-03-03 01:15:00 +0100 |
|---|---|---|
| committer | Oliver Kiddle <opk@zsh.org> | 2025-03-03 01:15:24 +0100 |
| commit | 71f35afa1cd48d6c25a517797e543cb2aa23a47b (patch) | |
| tree | 9ad2f1380831f9be1019acb820e54321b538d81d /Src | |
| parent | d315401a032cfada4ff733b20d708a5e76d75e48 (diff) | |
| download | zsh-71f35afa1cd48d6c25a517797e543cb2aa23a47b.tar.gz zsh-71f35afa1cd48d6c25a517797e543cb2aa23a47b.zip | |
53394: drop OSC and DCS sequences in key input
They are likely to be terminal query responses not keys. If they do match a
keybinding that's not affected. Also does likewise for certain CSI sequences.
Diffstat (limited to 'Src')
| -rw-r--r-- | Src/Zle/zle_keymap.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/Src/Zle/zle_keymap.c b/Src/Zle/zle_keymap.c index 5012917f5..ce52abe66 100644 --- a/Src/Zle/zle_keymap.c +++ b/Src/Zle/zle_keymap.c @@ -1580,7 +1580,7 @@ getkeymapcmd(Keymap km, Thingy *funcp, char **strp) Thingy func = t_undefinedkey; char *str = NULL; int lastlen = 0, lastc = lastchar; - int timeout = 0, csi = 0; + int timeout = 0, csi = 0, oscdcs = 0; keybuflen = 0; keybuf[0] = 0; @@ -1647,14 +1647,38 @@ getkeymapcmd(Keymap km, Thingy *funcp, char **strp) if (keybuf[keybuflen - 1] >= 0x40 && keybuf[keybuflen - 1] <= 0x7e && lastlen > csi - 2 && lastlen <= csi) { + if (keybuf[csi] == '?' && (keybuf[keybuflen - 1] == 'c' || + keybuf[keybuflen - 1] == 'u')) + { /* is a terminal query response - discard */ + keybuflen = csi - 2; + timeout = csi = 0; + continue; + } func = t_undefinedkey; lastlen = keybuflen; } csi = 0; } } + /* An OSC or DCS sequence is likely a late arriving terminal query + * response. Keep looping; if we reach an ST, discard the sequence + * - unless we first match a keybinding or a keytimeout elapses. */ + if (oscdcs) { + if (keybuf[keybuflen - 1] == '\007' || /* BEL sometimes used */ + (keybuf[keybuflen - 2] == '\033' && + keybuf[keybuflen - 1] == '\\') || + (keybuf[keybuflen - 2] == Meta && /* ST can be 0x9b */ + (unsigned char) keybuf[keybuflen - 1] == (0x9b ^ 32))) + { + keybuflen = oscdcs - 2; /* discard */ + timeout = oscdcs = 0; + continue; + } + } else if (keybuflen >= 2 && keybuf[keybuflen - 2] == '\033' && + (keybuf[keybuflen - 1] == ']' || keybuf[keybuflen - 1] == 'P')) + oscdcs = keybuflen; - if (!ispfx && !csi) + if (!ispfx && !csi && !oscdcs) break; } if(!lastlen && keybuflen) |