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Fix Kitty key encoding: legacy fallback, F3, case, send-keys drop.

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This commit is contained in:
Michael Grant
2026-09-29 07:23:45 +01:00
parent 25caebc173
commit cf7aad1ce8
4 changed files with 87 additions and 8 deletions
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53
regress/kitty-keys.sh
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@@ -104,5 +104,58 @@ $TMUX respawn-pane -k -t: \
wait_for_output
check_output 1b5b3f31751b5b3f30751b5b3f38751b5b3f3175
: >"$OUT"
# Modified Enter, Tab and Backspace are disambiguated even under flag 1;
# only the unmodified keys stay in legacy form.
$TMUX respawn-pane -k -t: \
"stty raw -echo; printf '\033[>1u'; dd bs=1 count=7 2>/dev/null | od -An -v -t x1 >'$OUT'; sleep 5"
wait_for_mode 'Kitty 1'
$TMUX send-keys -t: S-Enter
wait_for_output
check_output 1b5b31333b3275
: >"$OUT"
$TMUX respawn-pane -k -t: \
"stty raw -echo; printf '\033[>1u'; dd bs=1 count=1 2>/dev/null | od -An -v -t x1 >'$OUT'; sleep 5"
wait_for_mode 'Kitty 1'
$TMUX send-keys -t: Enter
wait_for_output
check_output 0d
: >"$OUT"
# An unshifted uppercase letter, as delivered by a legacy terminal or by
# send-keys, is reported as the lowercase code point plus Shift.
$TMUX respawn-pane -k -t: \
"stty raw -echo; printf '\033[>9u'; dd bs=1 count=7 2>/dev/null | od -An -v -t x1 >'$OUT'; sleep 5"
wait_for_mode 'Kitty 9'
$TMUX send-keys -t: A
wait_for_output
check_output 1b5b39373b3275
: >"$OUT"
# A modified F3 must use the unambiguous form even under flag 1 alone, since
# its legacy form ("CSI 1;mR") cannot be told apart from a cursor position
# report.
$TMUX respawn-pane -k -t: \
"stty raw -echo; printf '\033[>1u'; dd bs=1 count=7 2>/dev/null | od -An -v -t x1 >'$OUT'; sleep 5"
wait_for_mode 'Kitty 1'
$TMUX send-keys -t: S-F3
wait_for_output
check_output 1b5b31333b327e
# The following are not specific to the Kitty protocol, but were found by
# the same testing: send-keys must drop a key name it cannot encode for the
# pane's current mode rather than typing the name itself as text, and must
# not leave a stray Escape behind while deciding that.
: >"$OUT"
$TMUX respawn-pane -k -t: \
"stty raw -echo; timeout 2 dd bs=1 2>/dev/null | od -An -v -t x1 >'$OUT'"
sleep 0.3
for key in C-Escape C-BSpace M-C-BSpace; do
$TMUX send-keys -t: "$key"
done
sleep 2.3
check_output ''
$TMUX kill-server 2>/dev/null
exit 0