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refactor(lib.sh): extract hardcoded tmux shim paths to constants (FW-07) + cache _delegate_py_bin result (FW-08)

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FW-07: _resolve_real_tmux_path and _init_tmux_isolation now use
  _TMUX_SHIM_DIR_PATTERN and _TMUX_SKILLS_BIN_PATTERN env-overridable
  constants instead of hardcoded path strings. All 4 reference sites
  updated (lines 32, 37, 57, 76). Default values preserve original
  slash semantics (/multi-agent-tmux-shim/, /skills/.bin).

FW-08: _delegate_py_bin caches result in AGENT_PYTHON_BIN shell
  variable (not exported — avoids cross-workspace pollution).
  Fallback uses command -v python3 for absolute path caching.

Reviewed by agy-existing (FAIL->fixed) and claude-existing (FAIL->fixed).
Both reviewers identified: slash omission, incomplete extraction at :57/:76,
export side effects. All issues resolved.
This commit is contained in:
Godopu
2026-06-21 06:24:31 +00:00
parent c68852b8e3
commit 4cea11438a
1 changed files with 16 additions and 6 deletions
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skills/lib.sh
+16 -6
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@@ -26,15 +26,19 @@ LOCAL_BIN="${LOCAL_BIN:-$HOME/.local/bin}"
# ---------------------------------------------------------------------------
# Tmux Server Isolation support
# ---------------------------------------------------------------------------
# Paths to exclude when resolving the real tmux binary (shim/wrapper dirs).
_TMUX_SHIM_DIR_PATTERN="${_TMUX_SHIM_DIR_PATTERN:-/multi-agent-tmux-shim/}"
_TMUX_SKILLS_BIN_PATTERN="${_TMUX_SKILLS_BIN_PATTERN:-/skills/.bin}"
TMUX_SERVER_NAME="${TMUX_SERVER_NAME:-default}"
_resolve_real_tmux_path() {
if [ -z "${_REAL_TMUX_PATH:-}" ] || [[ "$_REAL_TMUX_PATH" == *"/multi-agent-tmux-shim/"* ]] || [[ "$_REAL_TMUX_PATH" == *"/skills/.bin"* ]]; then
if [ -z "${_REAL_TMUX_PATH:-}" ] || [[ "$_REAL_TMUX_PATH" == *"${_TMUX_SHIM_DIR_PATTERN}"* ]] || [[ "$_REAL_TMUX_PATH" == *"${_TMUX_SKILLS_BIN_PATTERN}"* ]]; then
local dir save_ifs="$IFS"
_REAL_TMUX_PATH=""
IFS=:
for dir in $PATH; do
if [[ "$dir" != *"/multi-agent-tmux-shim/"* ]] && [[ "$dir" != *"/skills/.bin"* ]] && [ -x "$dir/tmux" ]; then
if [[ "$dir" != *"${_TMUX_SHIM_DIR_PATTERN}"* ]] && [[ "$dir" != *"${_TMUX_SKILLS_BIN_PATTERN}"* ]] && [ -x "$dir/tmux" ]; then
_REAL_TMUX_PATH="$dir/tmux"
break
fi
@@ -50,7 +54,7 @@ _resolve_real_tmux_path() {
_init_tmux_isolation() {
_resolve_real_tmux_path
if [ -n "${TMUX_SERVER_NAME:-}" ] && [ "$TMUX_SERVER_NAME" != "default" ]; then
local wrapper_dir="${TMPDIR:-/tmp}/multi-agent-tmux-shim/${TMUX_SERVER_NAME}"
local wrapper_dir="${TMPDIR:-/tmp}${_TMUX_SHIM_DIR_PATTERN}${TMUX_SERVER_NAME}"
if [[ ":$PATH:" != *":$wrapper_dir:"* ]]; then
mkdir -p "$wrapper_dir"
cat <<EOF > "$wrapper_dir/tmux"
@@ -69,7 +73,7 @@ EOF
local new_path="" dir save_ifs="$IFS"
IFS=:
for dir in $PATH; do
if [[ "$dir" != *"/multi-agent-tmux-shim/"* ]] && [[ "$dir" != *"/skills/.bin"* ]]; then
if [[ "$dir" != *"${_TMUX_SHIM_DIR_PATTERN}"* ]] && [[ "$dir" != *"${_TMUX_SKILLS_BIN_PATTERN}"* ]]; then
if [ -z "$new_path" ]; then
new_path="$dir"
else
@@ -419,15 +423,21 @@ PYEOF
# _delegate_py_bin — echo the virtualenv python (walk up from skills/), else python3.
_delegate_py_bin() {
# Return cached result if available (shell variable, not exported — avoids cross-workspace pollution)
if [ -n "${AGENT_PYTHON_BIN:-}" ] && [ -x "$AGENT_PYTHON_BIN" ]; then
printf '%s\n' "$AGENT_PYTHON_BIN"; return 0
fi
local d
d="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
while [ "$d" != "/" ] && [ -n "$d" ]; do
if [ -x "$d/.venv/bin/python" ]; then
printf '%s\n' "$d/.venv/bin/python"; return 0
AGENT_PYTHON_BIN="$d/.venv/bin/python"
printf '%s\n' "$AGENT_PYTHON_BIN"; return 0
fi
d="$(dirname "$d")"
done
printf '%s\n' "python3"
AGENT_PYTHON_BIN="$(command -v python3 || echo python3)"
printf '%s\n' "$AGENT_PYTHON_BIN"
}
# _delegate_script <name> — echo the path to a tmux-agent-orchestrate-delegate-job script, resolved