mirror of
https://github.com/tmux/tmux.git
synced 2026-10-10 12:14:43 +00:00
128 lines
3.2 KiB
Bash
Executable File
128 lines
3.2 KiB
Bash
Executable File
#!/bin/sh
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# Clearing an area of a pane that is only partly visible in a client smaller
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# than the window must account for status lines at the top. The area is
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# clamped in window coordinates but drawn in terminal coordinates, which are
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# shifted down by the status lines.
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#
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# Phase 1: the viewport is at the top, so the bottom of the cleared area is
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# hidden; the last rows on the terminal must still be cleared.
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# Phase 2: the viewport is at the bottom, so the top of the cleared area is
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# hidden; this used to fail with "tty_clamp_area: y too big".
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PATH=/bin:/usr/bin
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TERM=screen
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LC_ALL=C.UTF-8
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export PATH TERM LC_ALL
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[ -z "$TEST_TMUX" ] && TEST_TMUX=$(readlink -f ../tmux)
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DIR=$(mktemp -d) || exit 1
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INNER="$TEST_TMUX -LtestI$$ -f/dev/null"
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OUTER="$TEST_TMUX -LtestO$$ -f/dev/null"
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CAPTURE=$DIR/capture
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fail()
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{
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echo "$*" >&2
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exit 1
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}
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cleanup()
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{
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$OUTER kill-server 2>/dev/null
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$INNER kill-server 2>/dev/null
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rm -rf "$DIR"
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}
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trap cleanup 0 1 15
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wait_for_client()
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{
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i=0
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while [ "$i" -lt 50 ]; do
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count=$($INNER list-clients 2>/dev/null | wc -l)
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[ "$count" -eq 1 ] && return 0
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sleep 0.1
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i=$((i + 1))
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done
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fail "inner client did not attach"
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}
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wait_for_marker()
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{
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marker=$1
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i=0
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while [ "$i" -lt 50 ]; do
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$INNER has-session 2>/dev/null || fail "inner server exited"
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$OUTER capture-pane -p -t outer >"$CAPTURE" || exit 1
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grep -q "$marker" "$CAPTURE" && return 0
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sleep 0.1
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i=$((i + 1))
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done
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fail "client did not receive $marker"
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}
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# Fill all 20 rows, then clear from the top and print a marker on a row that
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# is visible in the current viewport.
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cat >"$DIR/emitter.pl" <<'PERL'
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use strict;
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use warnings;
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sub wait_for {
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my ($file) = @_;
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select undef, undef, undef, 0.01 while !-e $file;
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}
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$| = 1;
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for my $phase (1 .. 2) {
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wait_for("$ENV{TRIGGER}-fill-$phase");
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print "\e[H", join("\r\n", ("FILL") x 20);
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wait_for("$ENV{TRIGGER}-clear-$phase");
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my $row = $phase == 1 ? 1 : 20;
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print "\e[H\e[J\e[$row;1HCLEARED$phase";
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}
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sleep 100;
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PERL
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$INNER new-session -d -s inner -x 40 -y 20 \
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"TRIGGER='$DIR/trigger' perl '$DIR/emitter.pl'" || exit 1
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$INNER set -g window-size manual || exit 1
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$INNER set -g status 2 || exit 1
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$INNER set -g status-position top || exit 1
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$INNER set -g status-interval 0 || exit 1
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$INNER set -g automatic-rename off || exit 1
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# The client is as large as the window, so with two status lines only 18
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# window rows are visible.
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$OUTER new-session -d -s outer -x 40 -y 20 'sleep 100' || exit 1
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$OUTER set -g status off || exit 1
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$OUTER set -g window-size manual || exit 1
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$OUTER set -g default-terminal screen || exit 1
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$OUTER respawn-pane -k -t outer "$INNER attach-session -t inner" || exit 1
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wait_for_client
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NAME=$($OUTER display-message -p -t outer '#{pane_tty}') || exit 1
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for phase in 1 2; do
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if [ "$phase" -eq 1 ]; then
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PAN=-U
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else
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PAN=-D
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fi
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: >"$DIR/trigger-fill-$phase"
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sleep 0.2
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$INNER refresh-client -t "$NAME" $PAN 100 || exit 1
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sleep 0.5
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: >"$DIR/trigger-clear-$phase"
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wait_for_marker "CLEARED$phase"
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sleep 0.2
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$INNER has-session 2>/dev/null || fail "inner server exited"
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$OUTER capture-pane -p -t outer >"$CAPTURE" || exit 1
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if grep -q FILL "$CAPTURE"; then
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cat "$CAPTURE" >&2
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fail "phase $phase left rows uncleared"
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fi
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done
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exit 0
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