.tmux-session starter + tmux-join helper

.tmux-session

#!/usr/bin/env bash
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
SESSION="${TMUX_SESSION_NAME:-$(basename "$SCRIPT_DIR")}"

if ! tmux has-session -t "=$SESSION" 2>/dev/null; then
    tmux new-session -d -s "$SESSION" -c "$SCRIPT_DIR" -n editor
    tmux new-window -t "$SESSION" -n shell -c "$SCRIPT_DIR"
    tmux send-keys -t "$SESSION:editor" 'nvim .' C-m
fi

tmux attach-session -t "=$SESSION"

tmux-join

#!/usr/bin/env bash
# tmux-join: Smart tmux session attach/switch - prevents nested tmux
# Usage: tmux-join SESSION_TARGET
#
# When called from within tmux: switches to target session
# When called from outside tmux: attaches to target session

set -euo pipefail

if [[ $# -ne 1 ]]; then
    echo "Usage: tmux-join SESSION_TARGET" >&2
    echo "Example: tmux-join '=dotfiles:0'" >&2
    exit 1
fi

SESSION_TARGET="$1"

# Wait for session to be created (race condition protection)
MAX_RETRIES=10
RETRY_DELAY=0.1  # 100ms

for ((i=1; i<=MAX_RETRIES; i++)); do
    if tmux has-session -t "$SESSION_TARGET" 2>/dev/null; then
        break
    fi

    if [[ $i -eq MAX_RETRIES ]]; then
        echo "Error: Session '$SESSION_TARGET' not found after ${MAX_RETRIES} retries" >&2
        exit 1
    fi

    sleep "$RETRY_DELAY"
done

# Try switch-client first (works when inside tmux)
# Falls back to attach if not in tmux or switch fails
tmux switch-client -t "$SESSION_TARGET" 2>/dev/null || tmux attach -t "$SESSION_TARGET"