helper to initialise session with multiple windows

diff --git a/.bin/mtmux b/.bin/mtmux
new file mode 100755 (executable)
index 0000000..bee0bc8
--- /dev/null
+++ b/.bin/mtmux
@@ -0,0 +1,91 @@
+#!/bin/sh
+#
+# mtmux — initialise tmux session with multiple windows
+#
+# Usage:
+#   1. mtmux [-n name] [-c cwd] -- cmd1 . windowname: cmd2 . shellname:
+#
+#      Spawns a tmux session, optionally named "name", and optionally with the
+#      working directory set to "cwd", with three windows, one running cmd1,
+#      one running cmd2 and named "windowname", and one named "shellname"
+#      running the default command.
+#
+#   2. mtmux -n name -w 2
+#
+#      Attach to session "name" and switch to window 2
+#
+# Copyright © 2020 martin f. krafft <madduck@madduck.net>
+# Released under the WTFPL.
+#
+set -eu
+
+warn() {
+  echo >&2 "$@"
+}
+
+err() {
+  local exitcode; exitcode="$1"; shift
+  warn "$@"
+  exit $exitcode
+}
+
+for i in "$@"; do
+  case "${state:-}:$i" in
+    (:-c) state=cwd;;
+    (cwd:*)
+      [ -z "${cwd:-}" ] && cwd="$i" || err 1 "Option -c already specified"
+      state=
+      ;;
+
+    (:-n) state=name;;
+    (name:*)
+      [ -z "${name:-}" ] && name="$i" || err 1 "Option -n already specified"
+      state=
+      ;;
+
+    (:-w) state=win;;
+    win:*)
+      [ -z "${window:-}" ] && window="$i" || err 1 "Option -w already specified"
+      state=
+      ;;
+
+    (:--) shift; set -- "$@"; break
+  esac
+  shift 2>/dev/null || break
+done
+
+args=
+if [ -n "${window:-}" ]; then
+
+  if [ -n "${cwd:-}" ]; then
+    warn "Both -w and -c don't make sense, ignoring -c"
+    cwd=
+  fi
+  if [ -n "$@" ]; then
+    warn "Ignoring commands specified with -w"
+    set --
+  fi
+  if [ -z "$name" ]; then
+    err 1 "Missing option -n, required with -w"
+  fi
+
+  args="new -t $name \; select-window -t $window"
+
+else
+
+  subcmd="new${name:+ -s $name}"
+  for i in "$@" +; do
+    case "$i" in
+      (*:) wname="${i%:}";;
+      (+|.|\;)
+        args="${args}${subcmd}${cwd:+ -c $cwd}${wname:+ -n $wname}${cmd:-} \\; "
+        subcmd="neww -d"
+        cmd=
+        ;;
+      (*) cmd="${cmd:-} $i";;
+    esac
+  done
+
+fi
+
+eval exec tmux $args

diff --git a/.gitignore.d/tmux b/.gitignore.d/tmux
index 60810fdd7cce0ae2e9d705805078b03f907ff589..c398bca54a26feb1985ed6403d8a670509edff49 100644 (file)
--- a/.gitignore.d/tmux
+++ b/.gitignore.d/tmux
@@ -1,4 +1,5 @@
 *
-!/.gitignore.d
+!/.bin/mtmux
+!/.bin/tmux
 !/.gitignore.d/tmux
 !/.tmux.conf