Files
fish-config/functions/_zellij_dump_log.fish
rootiest 7564604c53 fix(zellij): repair scrollback logging on shell exit
The zellij wrapper (functions/zellij.fish) rewrote every `zellij`
invocation as `zellij options --theme catppuccin-mocha <args>`, which is
only valid for launching a new session. This mangled every subcommand,
including the `zellij action dump-screen` call inside _zellij_dump_log,
so no logs were ever produced. The theme is already set in config.kdl,
making the wrapper redundant — remove it.

Also harden _zellij_dump_log:
- dump-screen takes the file via stdout redirect, not a positional arg
  (rejected by zellij 0.44) nor --path (server-side write, flaky)
- add --ansi to preserve color in the logs
- discard empty dumps instead of leaving junk files

Document the structural limitation: zellij can only snapshot on a clean
shell exit, unlike tmux's continuous pipe-pane stream. Closing a pane or
quitting zellij tears down the pane/server before it can be dumped.
2026-06-16 15:05:41 -04:00

46 lines
2.0 KiB
Fish

# Copyright (C) 2026 Rootiest
# SPDX-License-Identifier: AGPL-3.0-or-later
# SYNOPSIS
# _zellij_dump_log
#
# DESCRIPTION
# Captures the current Zellij pane's scrollback to a timestamped log in
# SCROLLBACK_HISTORY_DIR (default ~/.terminal_history). Zellij has no live
# output-streaming facility like tmux's pipe-pane, so this performs a one-shot
# `zellij action dump-screen --full` — intended to run on shell exit. Old
# zellij_*.log files are pruned via _prune_terminal_logs to stay within
# SCROLLBACK_HISTORY_MAX_FILES.
#
# The C5 logging guard (__fish_config_op_logging) is evaluated here, at call
# time, so toggling logging takes effect on the next exit without a restart.
# No-op when logging is disabled, not inside Zellij ($ZELLIJ unset), or the
# zellij binary is missing.
#
# RETURNS
# 0 Always
#
# EXAMPLE
# _zellij_dump_log
function _zellij_dump_log --description 'Dump the current Zellij pane scrollback to a log file, with pruning'
__fish_config_op_enabled __fish_config_op_logging; or return 0
set -q ZELLIJ; or return 0
type -q zellij; or return 0
set -l log_dir (set -q SCROLLBACK_HISTORY_DIR; and echo $SCROLLBACK_HISTORY_DIR; or echo "$HOME/.terminal_history")
set -l session (set -q ZELLIJ_SESSION_NAME; and echo $ZELLIJ_SESSION_NAME; or echo unknown)
set -l pane_id (set -q ZELLIJ_PANE_ID; and echo $ZELLIJ_PANE_ID; or echo unknown)
set -l timestamp (date "+%Y-%m-%d_%H-%M-%S")
set -l log_file "$log_dir/zellij_"$session"-p"$pane_id"_"$timestamp".log"
mkdir -p $log_dir
# Dump to STDOUT and let this fish process write the file. `--path` makes the
# zellij *server* write the file (its CWD/permissions, historically flaky);
# capturing STDOUT keeps the write client-side and reliable. Drop the empty
# file if the dump produced nothing (e.g. pane already torn down on exit).
zellij action dump-screen --full --ansi >"$log_file" 2>/dev/null
test -s "$log_file"; or command rm -f "$log_file"
_prune_terminal_logs zellij
end