wip(commands): re-implement core commands as bash functions

Re-implement all libexec executables as bash functions, with the goal of
being able build a single standalone execuable bash script for
tmuxifier.

.gitignore

@@ -0,0 +1,3 @@
+test-runner.sh
+test/assert.sh
+test/stub.sh

.travis.yml

@@ -0,0 +1,16 @@
+language: c
+env:
+  - TMUX_VERSION="1.6"
+  - TMUX_VERSION="1.7"
+  - TMUX_VERSION="1.8"
+  - TMUX_VERSION="1.9a"
+  - TMUX_VERSION="2.0"
+before_install:
+  - sudo apt-get update
+  - sudo apt-get install -y bc build-essential libevent-dev libncurses5-dev
+  - wget https://github.com/tmux/tmux/releases/download/${TMUX_VERSION}/tmux-${TMUX_VERSION}.tar.gz
+  - tar -zxf tmux-${TMUX_VERSION}.tar.gz
+  - cd tmux-${TMUX_VERSION}
+  - ./configure && make && sudo make install
+  - cd ..
+script: make test

Makefile

@@ -0,0 +1,50 @@
+test: bootstrap
+	./test-runner.sh
+
+bootstrap: test-runner.sh test/assert.sh test/stub.sh
+clean: remove_test-runner.sh remove_test/assert.sh remove_test/stub.sh
+update: update_test-runner.sh update_test/assert.sh update_test/stub.sh
+
+test-runner.sh:
+	echo "fetching test-runner.sh..." && \
+	curl -s -L -o test-runner.sh \
+		https://github.com/jimeh/test-runner.sh/raw/v0.2.0/test-runner.sh && \
+	chmod +x test-runner.sh
+
+remove_test-runner.sh:
+	( \
+		test -f "test-runner.sh" && rm "test-runner.sh" && \
+		echo "removed test-runner.sh"\
+	) || exit 0
+
+update_test-runner.sh: remove_test-runner.sh test-runner.sh
+
+test/assert.sh:
+	echo "fetching test/assert.sh..." && \
+	curl -s -L -o test/assert.sh \
+		https://raw.github.com/lehmannro/assert.sh/v1.0.2/assert.sh
+
+remove_test/assert.sh:
+	test -f "test/assert.sh" && \
+		rm "test/assert.sh" && \
+		echo "removed test/assert.sh"
+
+update_test/assert.sh: remove_test/assert.sh test/assert.sh
+
+test/stub.sh:
+	echo "fetching test/stub.sh..." && \
+	curl -s -L -o test/stub.sh \
+		https://raw.github.com/jimeh/stub.sh/v1.0.1/stub.sh
+
+remove_test/stub.sh:
+	test -f "test/stub.sh" && \
+		rm "test/stub.sh" && \
+		echo "removed test/stub.sh"
+
+update_test/stub.sh: remove_test/stub.sh test/stub.sh
+
+.SILENT:
+.PHONY: test bootstrap clean \
+	remove_test-runner.sh update_test-runner.sh \
+	remove_test/assert.sh update_test/assert.sh \
+	remove_test/stub.sh   update_test/stub.sh

README.md

@@ -1,20 +1,20 @@
-# Tmuxifier
+# Tmuxifier [![Build Status](https://api.travis-ci.org/jimeh/tmuxifier.svg)](https://travis-ci.org/jimeh/tmuxifier)
 
 Tmuxify your Tmux. Create, edit, manage and load complex Tmux session, window
 and pane configurations with ease.
 
-In short, Tmuxifier allows you to easily create, edit, and load "layout"
+In short, Tmuxifier allows you to easily create, edit, and load "layout" files,
-files, which are simple shell scripts where you use the `tmux` command and
+which are simple shell scripts where you use the `tmux` command and helper
-helper commands provided by `tmuxifier` to manage Tmux sessions and windows
+commands provided by `tmuxifier` to manage Tmux sessions and windows
 
 ### Window Layouts
 
-Window layouts create a new Tmux window, optionally setting the window title
+Window layouts create a new Tmux window, optionally setting the window title and
-and root path where all shells are cd'd to by default. It allows you to easily
+root path where all shells are cd'd to by default. It allows you to easily split
-split a window into specifically sized panes and more as you wish.
+a window into specifically sized panes and more as you wish.
 
-You can load a window layout directly into your current Tmux session, or into
+You can load a window layout directly into your current Tmux session, or into a
-a session layout to have the window created along with the session.
+session layout to have the window created along with the session.
 
 ### Session Layouts
 
@@ -25,10 +25,11 @@ defined directly within the session layout file.
 
 ## Example
 
-Given we have a window layout file called [example.window.sh][] which
+Given we have a window layout file called [example.window.sh][] which looks
-looks like:
+like:
 
-[example.window.sh]: https://github.com/jimeh/tmuxifier/blob/master/examples/example.window.sh
+[example.window.sh]:
+  https://github.com/jimeh/tmuxifier/blob/master/examples/example.window.sh
 
 ```bash
 window_root "~/Desktop"
@@ -39,8 +40,8 @@ split_h 60
 select_pane 0
 ```
 
-You can then load that window layout into a new window in the
+You can then load that window layout into a new window in the current tmux
-current tmux session using:
+session using:
 
     tmuxifier load-window example
 
@@ -50,6 +51,8 @@ Which will yield a Tmux window looking like this:
 
 ## Installation
 
+### Manual
+
 Clone the repo to your machine:
 
     git clone https://github.com/jimeh/tmuxifier.git ~/.tmuxifier
@@ -57,33 +60,49 @@ Clone the repo to your machine:
 Then add `$HOME/.tmuxifier/bin` to your PATH to make the `tmuxifier` executable
 available to you:
 
-__In bash & zsh:__
+**In bash & zsh:**
 
 ```bash
 export PATH="$HOME/.tmuxifier/bin:$PATH"
 ```
 
-__In tcsh:__
+**In tcsh:**
 
 ```tcsh
 set path = ( "~/.tmuxifier/bin" $path )
 ```
 
-__In fish:__
+**In fish:**
 
 ```bash
 set -gx PATH "~/.tmuxifier/bin" $PATH
 ```
 
-### Custom Installation Path
+#### Custom Installation Path
 
 To install Tmuxifier somewhere else than the suggested `~/.tmuxifier`, simply
 clone the repository to your custom location, and ensure the `bin` folder is
 added to your PATH making the `tmuxifier` executable available to you.
 
+### TPM
+
+You can also install and update Tmuxifier with
+[TPM](https://github.com/tmux-plugins/tpm):
+
+```bash
+set -g @plugin 'jimeh/tmuxifier'
+```
+
+Trigger TPM's install command with `prefix` + `I` to install Tmuxifier to TPM's
+plugin directory (default is `$HOME/.tmux/plugins`).
+
+To use the `tmuxifier` command, you will need to add the `bin` directory to your
+PATH. If you are using the default TPM plugin directory, the `bin` directory
+will be `$HOME/.tmux/plugins/tmuxifier/bin`.
+
 ## Setup
 
-__In bash & zsh:__
+**In bash & zsh:**
 
 And add the following to your `~/.profile`, `~/.bash_profile`, `~/.zshrc` or
 equivalent:
@@ -92,7 +111,7 @@ equivalent:
 eval "$(tmuxifier init -)"
 ```
 
-__In tcsh:__
+**In tcsh:**
 
 Add the following to your `~/.cshrc`, `~/.tcshrc` or equivalent:
 
@@ -100,19 +119,19 @@ Add the following to your `~/.cshrc`, `~/.tcshrc` or equivalent:
 eval `tmuxifier init -`
 ```
 
-__In fish:__
+**In fish:**
 
 And add the following to your `~/.config/fish/config.fish` or equivalent:
 
 ```bash
-eval (tmuxifier init -)
+eval (tmuxifier init - fish)
 ```
 
 ### Custom Tmux Arguments
 
-If you need to pass custom arguments to `tmux` itself, you can do so by
+If you need to pass custom arguments to `tmux` itself, you can do so by setting
-setting the `TMUXIFIER_TMUX_OPTS` environment variable. For example to set
+the `TMUXIFIER_TMUX_OPTS` environment variable. For example to set custom
-custom arguments globally:
+arguments globally:
 
 ```bash
 export TMUXIFIER_TMUX_OPTS="-L my-awesome-socket-name"
@@ -134,7 +153,7 @@ git pull
 
 ## Usage
 
-*__Note:__ This section needs expanding upon.*
+_**Note:** This section needs expanding upon._
 
 For a quick reference on available commands and their aliases, please run:
 
@@ -142,8 +161,8 @@ For a quick reference on available commands and their aliases, please run:
 
 Tmuxifier doesn't come with any layouts, so you'll want to create your own
 window and session layout files. New layout files are populated with examples
-and comments explaining what things do. Also, having a look at the
+and comments explaining what things do. Also, having a look at the [examples][]
-[examples][] directory will also give you a good idea.
+directory will also give you a good idea.
 
 ### Window Layouts
 
@@ -151,16 +170,16 @@ First off you'll want to define a window layout:
 
     tmuxifier new-window my-awesome-window
 
-This will create a new layout file called `my-awesome-window.window.sh` in
+This will create a new layout file called `my-awesome-window.window.sh` in your
-your `$TMUXIFIER_LAYOUT_PATH`, and open it with the editor defined in
+`$TMUXIFIER_LAYOUT_PATH`, and open it with the editor defined in `$EDITOR`.
-`$EDITOR`. Customize it as you wish, and save.
+Customize it as you wish, and save.
 
-You can now load *my-awesome-window* with the following command:
+You can now load _my-awesome-window_ with the following command:
 
     tmuxifier load-window my-awesome-window
 
-You should now have a new Tmux window open created from your custom and
+You should now have a new Tmux window open created from your custom and awesome
-awesome window layout.
+window layout.
 
 ### Session Layouts
 
@@ -170,8 +189,9 @@ To create your first session layout, run:
 
 Same deal as with creating a new window, except the filename ends with
 `.session.sh` instead of `.window.sh`, and the file's pre-populated content
-looks different. To have your awesome window loaded, add `load_window
+looks different. To have your awesome window loaded, add
-"my-awesome-window"` to the session layout next to existing examples.
+`load_window "my-awesome-window"` to the session layout next to existing
+examples.
 
 To load the session layout simply run:
 
@@ -195,13 +215,28 @@ export TMUXIFIER_LAYOUT_PATH="$HOME/.tmux-layouts"
 
 ### Disable Shell-Completion
 
-Tmuxifier comes with shell-completion for bash, zsh, tcsh, and fish. If for
+Tmuxifier comes with shell-completion for bash, zsh, tcsh, and fish. If for any
-any reason you need to disable it, just set `$TMUXIFIER_NO_COMPLETE`.
+reason you need to disable it, just set `$TMUXIFIER_NO_COMPLETE`.
 
 ```bash
 export TMUXIFIER_NO_COMPLETE=1
 ```
 
+## Tips
+
+### iTerm2 Integration
+
+Tmuxifier supports iTerm2's [Tmux integration][]. It can be used in two ways:
+
+- Passing `-CC` as a second argument to the `load-session` command. For example:
+
+          tmuxifier load-session my-awesome-session -CC
+
+- Setting the `TMUXIFIER_TMUX_ITERM_ATTACH` environment variable to `-CC` before
+  calling the `load-session` command.
+
+[tmux integration]: https://gitlab.com/gnachman/iterm2/wikis/TmuxIntegration
+
 ## Inspiration
 
 - Tmuxifier is largely inspired by [Tmuxinator][].
@@ -210,16 +245,16 @@ export TMUXIFIER_NO_COMPLETE=1
 
 ## Tmuxifier vs. Tmuxinator
 
-Though Tmuxifier is largely inspired by the excellent [Tmuxinator][] project,
+Though Tmuxifier is largely inspired by the excellent [Tmuxinator][] project, it
-it does set itself apart in a number of ways:
+does set itself apart in a number of ways:
 
-- Uses shell scripts to define Tmux sessions and windows instead of YAML
+- Uses shell scripts to define Tmux sessions and windows instead of YAML files.
-  files. The benefit is total control over Tmux, but the definition files are
+  The benefit is total control over Tmux, but the definition files are more
-  more complicated to work with.
+  complicated to work with.
 - Instead of using a "project" concept, Tmuxifier uses a concept of "sessions"
   and "windows" just like Tmux itself. This allows you to load a whole session
-  with multiple pre-defined window configurations, or just load a single
+  with multiple pre-defined window configurations, or just load a single window
-  window configuration into your existing session.
+  configuration into your existing session.
 - Tmuxifier is a set of shell scripts, meaning it doesn't require Ruby to be
   installed on the machine.
 
@@ -228,8 +263,8 @@ it does set itself apart in a number of ways:
 
 ## Todos
 
-* Improve Readme, specially Usage section.
+- Improve Readme, specially Usage section.
-* Write up a detailed reference for all available layout helper functions.
+- Write up a detailed reference for all available layout helper functions.
 
 ## License
 
@@ -237,20 +272,19 @@ it does set itself apart in a number of ways:
 
 Copyright (c) 2014 Jim Myhrberg.
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
+Permission is hereby granted, free of charge, to any person obtaining a copy of
-of this software and associated documentation files (the "Software"), to deal
+this software and associated documentation files (the "Software"), to deal in
-in the Software without restriction, including without limitation the rights
+the Software without restriction, including without limitation the rights to
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-copies of the Software, and to permit persons to whom the Software is
+the Software, and to permit persons to whom the Software is furnished to do so,
-furnished to do so, subject to the following conditions:
+subject to the following conditions:
 
 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-SOFTWARE.

bin/tmuxifier

@@ -3,11 +3,12 @@ set -e
 [ -n "$TMUXIFIER_DEBUG" ] && set -x
 
 resolve_link() {
-  $(type -p greadlink readlink | head -1) $1
+  $(type -p greadlink readlink | head -1) "$1"
 }
 
 abs_dirname() {
-  local cwd="$(pwd)"
+  local cwd
+  cwd="$(pwd)"
   local path="$1"
 
   while [ -n "$path" ]; do
@@ -20,48 +21,63 @@ abs_dirname() {
   cd "$cwd"
 }
 
-if [ -z "${TMUXIFIER}" ]; then
+main() {
-  # Set TMUXIFIER relative to the "tmuxifier" executable.
+  if [ -z "${TMUXIFIER}" ]; then
-  export TMUXIFIER="$(dirname "$(abs_dirname "$0")")"
+    # Set TMUXIFIER relative to the "tmuxifier" executable.
-else
+    export TMUXIFIER="$(dirname "$(abs_dirname "$0")")"
-  # Strip any trailing slash (/) characters from TMUXIFIER variable.
+  else
-  export TMUXIFIER="${TMUXIFIER%/}"
+    # Strip any trailing slash (/) characters from TMUXIFIER variable.
-fi
+    export TMUXIFIER="${TMUXIFIER%/}"
+  fi
 
-# Load tmuxifier environment variables.
+  # Bootstrap tmuxifier.
-source "$TMUXIFIER/lib/env.sh"
+  source "$TMUXIFIER/lib/load.sh"
 
-# Add tmuxifier's internal commands to PATH.
+  # Check Tmux version.
-export PATH="$TMUXIFIER/libexec:$PATH"
+  export TMUXIFIER_MIN_TMUX_VERSION="1.6"
+  if [ "$(tmuxifier-tmux-version "$TMUXIFIER_MIN_TMUX_VERSION")" == "<" ]; then
+    echo -e "ERROR: Tmuxifier requires Tmux v${TMUXIFIER_MIN_TMUX_VERSION}" \
+      "or newer. You have v$(tmuxifier-tmux-version)." >&2
+    exit 1
+  fi
 
-# Check Tmux version.
+  # Get command and shift arguments.
-export TMUXIFIER_MIN_TMUX_VERSION="1.6"
+  local command="$1"
-if [ "$(tmuxifier-tmux-version "$TMUXIFIER_MIN_TMUX_VERSION")" == "<" ]; then
+  shift 1
-  echo -e "ERROR: Tmuxifier requires Tmux v${TMUXIFIER_MIN_TMUX_VERSION}" \
-       "or newer. You have v$(tmuxifier-tmux-version)." >&2
-  exit 1
-fi
 
-# Parse given command
+  # Resolve to full command name if an alias is given.
-command="$1"
+  command="$(tmuxifier-alias "$command" || echo "$command")"
-case "$command" in
-  "" | "-h" | "--help" )
-    echo -e "tmuxifier $(tmuxifier-version)\n$(tmuxifier-help)" >&2
-    ;;
 
-  "-v" | "--version" )
+  case "$command" in
-    tmuxifier-version
+    "" | "-h" | "--help")
-    ;;
+      echo -e "tmuxifier $(tmuxifier-version)\n$(tmuxifier-help)" >&2
+      ;;
 
-  * )
+    "-v" | "--version")
-    ! command_path="$(tmuxifier-resolve-command-path "$command")"
+      tmuxifier-version
+      ;;
 
-    if [ -z "$command_path" ]; then
+    *)
-      echo "tmuxifier: no such command '$command'" >&2
+      local command_path
-      exit 1
+      local func_name
-    fi
 
-    shift 1
+      func_name="tmuxifier-$command"
-    exec "$command_path" "$@"
+
-    ;;
+      # Check if command is available as a function.
-esac
+      if declare -f "$func_name" > /dev/null; then
+        "$func_name" "$@"
+      else
+        # Fall back to libexec executable.
+        command_path="$(tmuxifier-resolve-command-path "$command")" || true
+        if [ -z "$command_path" ]; then
+          echo "tmuxifier: no such command '$command'" >&2
+          exit 1
+        fi
+
+        exec "$command_path" "$@"
+      fi
+      ;;
+  esac
+}
+
+main "$@"

completion/tmuxifier.bash

@@ -3,11 +3,11 @@ _tmuxifier() {
   local word="${COMP_WORDS[COMP_CWORD]}"
 
   if [ "$COMP_CWORD" -eq 1 ]; then
-    COMPREPLY=( $(compgen -W "$(tmuxifier commands)" -- "$word") )
+    COMPREPLY=($(compgen -W "$(tmuxifier commands)" -- "$word"))
   else
     local command="${COMP_WORDS[1]}"
     local completions="$(tmuxifier completions "$command")"
-    COMPREPLY=( $(compgen -W "$completions" -- "$word") )
+    COMPREPLY=($(compgen -W "$completions" -- "$word"))
   fi
 }
 

init.fish

@@ -11,7 +11,10 @@ end
 # If `tmuxifier` is available, and `$TMUXIFIER_NO_COMPLETE` is not set, then
 # load Tmuxifier shell completion.
 if test -n (which tmuxifier); and test -z $TMUXIFIER_NO_COMPLETE
-  source "$TMUXIFIER/completion/tmuxifier.fish"
+    # fish shell 2.0.0 does not have the source alias
+    if [ (fish --version 2>| awk -F'version ' '{print $2}') = '2.0.0' ];
+      . "$TMUXIFIER/completion/tmuxifier.fish"
+    else
+      source "$TMUXIFIER/completion/tmuxifier.fish"
+    end
 end
-
-

lib/commands/alias.sh

@@ -0,0 +1,56 @@
+# Resolve a tmuxifier command alias to its full command name.
+#
+# Usage:
+#   tmuxifier-alias <alias>
+#
+# Arguments:
+#   $1 - Alias to resolve
+#
+# Output:
+#   The full command name if alias is recognized, empty otherwise.
+#
+# Returns:
+#   0 - Alias was recognized
+#   1 - Alias was not recognized
+tmuxifier-alias() {
+  # Provide tmuxifier help
+  if calling-help "$@"; then
+    echo "usage: tmuxifier alias <alias>
+
+Resolve a command alias to it's full name."
+    return
+  fi
+
+  case "$1" in
+    "session" | "ses" | "s")
+      echo "load-session"
+      ;;
+    "window" | "win" | "w")
+      echo "load-window"
+      ;;
+    "new-ses" | "nses" | "ns")
+      echo "new-session"
+      ;;
+    "new-win" | "nwin" | "nw")
+      echo "new-window"
+      ;;
+    "edit-ses" | "eses" | "es")
+      echo "edit-session"
+      ;;
+    "edit-win" | "ewin" | "ew")
+      echo "edit-window"
+      ;;
+    "l")
+      echo "list"
+      ;;
+    "list-ses" | "lses" | "ls")
+      echo "list-sessions"
+      ;;
+    "list-win" | "lwin" | "lw")
+      echo "list-windows"
+      ;;
+    *)
+      return 1
+      ;;
+  esac
+}

lib/commands/resolve-command-path.sh

@@ -0,0 +1,43 @@
+# Resolve the absolute path to a tmuxifier command or alias.
+#
+# Usage:
+#   tmuxifier-resolve-command-path <command_or_alias>
+#
+# Arguments:
+#   $1 - Command name or alias to resolve
+#
+# Output:
+#   The absolute path to the command executable, or empty if not found.
+#
+# Returns:
+#   0 - Command was found
+#   1 - Command was not found
+tmuxifier-resolve-command-path() {
+  # Provide tmuxifier help
+  if calling-help "$@"; then
+    echo "usage: tmuxifier resolve-command-path <command_or_alias>
+
+Outputs the absolute path to the given command or command alias."
+    return
+  fi
+
+  local command_path=""
+
+  if [ -n "$1" ]; then
+    # Look for executable file, not functions.
+    command_path="$(type -P "tmuxifier-$1" 2> /dev/null)" || true
+    if [ -z "$command_path" ]; then
+      local resolved
+      resolved="$(tmuxifier-alias "$1")"
+      if [ -n "$resolved" ]; then
+        command_path="$(type -P "tmuxifier-$resolved" 2> /dev/null)" || true
+      fi
+    fi
+  fi
+
+  if [ -n "$command_path" ]; then
+    echo "$command_path"
+  else
+    return 1
+  fi
+}

lib/commands/tmux-version.sh

@@ -0,0 +1,63 @@
+# Enable extended globbing for version string cleanup.
+shopt -s extglob
+
+# Output current Tmux version, or compare against a target version.
+#
+# Usage:
+#   tmuxifier-tmux-version             # Outputs current Tmux version
+#   tmuxifier-tmux-version "1.9"       # Outputs "=", "<", or ">"
+#
+# Arguments:
+#   $1 - Optional target version to compare against
+#
+# Output:
+#   Without arguments: The current Tmux version string
+#   With target version: One of "=", "<", or ">" indicating if the current
+#                        Tmux version is equal to, less than, or greater than
+#                        the target version.
+#
+# Returns:
+#   0 - Always succeeds
+tmuxifier-tmux-version() {
+  # Provide tmuxifier help
+  if calling-help "$@"; then
+    echo "usage: tmuxifier tmux-version [<target-version>]
+
+Outputs current Tmux version. If given optional target-version it outputs one
+of three possible characters indicating if the current Tmux version number is
+equal to, less than, or greater than the <target-version>.
+
+The three possible outputs are \"=\", \"<\", and \">\"."
+    return
+  fi
+
+  local version
+  version="$(tmux -V)"
+  version="${version/tmux /}"
+
+  # Fix for tmux next-* versions
+  version="${version/next-/}"
+
+  if [ -z "$1" ]; then
+    echo "$version"
+    return
+  fi
+
+  if [ "$version" == "master" ]; then
+    # When version string is "master", tmux was compiled from source, and we
+    # assume it's later than whatever the <target-version> is.
+    echo '>'
+  else
+    # Fix for "1.9a" version comparison, as vercomp() can only deal with
+    # purely numeric version numbers.
+    version="${version//+([a-zA-Z])/}"
+
+    local result
+    vercomp "$version" "$1" && result=$? || result=$?
+    case $result in
+      0) echo '=' ;;
+      1) echo '>' ;;
+      2) echo '<' ;;
+    esac
+  fi
+}

lib/layout-helpers.sh

@@ -18,11 +18,15 @@ tmux() {
 #   - $2: (optional) Shell command to execute when window is created.
 #
 new_window() {
-  if [ -n "$1" ]; then window="$1"; fi
+  if [ -n "$1" ]; then local winarg=(-n "$1"); fi
   if [ -n "$2" ]; then local command=("$2"); fi
-  if [ -n "$window" ]; then local winarg=(-n "$window"); fi
 
   tmuxifier-tmux new-window -t "$session:" "${winarg[@]}" "${command[@]}"
+
+  # Disable renaming if a window name was given.
+  if [ -n "$1" ]; then tmuxifier-tmux set-option -t "$1" allow-rename off; fi
+
+  window="$(__get_current_window_index)"
   __go_to_window_or_session_path
 }
 
@@ -33,7 +37,12 @@ new_window() {
 #   - $2: (optional) Target pane ID to split in current window.
 #
 split_v() {
-  if [ -n "$1" ]; then local percentage=(-p "$1"); fi
+  if [ "$(tmuxifier-tmux-version "3.0")" == ">" ]; then
+    # Tmux 3.1 and later.
+    if [ -n "$1" ]; then local percentage=(-l "$1"'%'); fi
+  else
+    if [ -n "$1" ]; then local percentage=(-p "$1"); fi
+  fi
   tmuxifier-tmux split-window -t "$session:$window.$2" -v "${percentage[@]}"
   __go_to_window_or_session_path
 }
@@ -45,7 +54,12 @@ split_v() {
 #   - $2: (optional) Target pane ID to split in current window.
 #
 split_h() {
-  if [ -n "$1" ]; then local percentage=(-p "$1"); fi
+  if [ "$(tmuxifier-tmux-version "3.0")" == ">" ]; then
+    # Tmux 3.1 and later.
+    if [ -n "$1" ]; then local percentage=(-l "$1"'%'); fi
+  else
+    if [ -n "$1" ]; then local percentage=(-p "$1"); fi
+  fi
   tmuxifier-tmux split-window -t "$session:$window.$2" -h "${percentage[@]}"
   __go_to_window_or_session_path
 }
@@ -89,6 +103,7 @@ clock() {
 #
 select_window() {
   tmuxifier-tmux select-window -t "$session:$1"
+  window="$(__get_current_window_index)"
 }
 
 # Select a specific pane in the current window.
@@ -100,6 +115,44 @@ select_pane() {
   tmuxifier-tmux select-pane -t "$session:$window.$1"
 }
 
+# Balance windows vertically with the "even-vertical" layout.
+#
+# Arguments:
+#   - $1: (optional) Window ID or name to operate on.
+#
+balance_windows_vertical() {
+  tmuxifier-tmux select-layout -t "$session:${1:-$window}" even-vertical
+}
+
+# Balance windows horizontally with the "even-horizontal" layout.
+#
+# Arguments:
+#   - $1: (optional) Window ID or name to operate on.
+#
+balance_windows_horizontal() {
+  tmuxifier-tmux select-layout -t "$session:${1:-$window}" even-horizontal
+}
+
+# Turn on synchronize-panes in a window.
+#
+# Arguments:
+#   - $1: (optional) Window ID or name to operate on.
+#
+synchronize_on() {
+  tmuxifier-tmux set-window-option -t "$session:${1:-$window}" \
+    synchronize-panes on
+}
+
+# Turn off synchronize-panes in a window.
+#
+# Arguments:
+#   - $1: (optional) Window ID or name to operate on.
+#
+synchronize_off() {
+  tmuxifier-tmux set-window-option -t "$session:${1:-$window}" \
+    synchronize-panes off
+}
+
 # Send/paste keys to the currently active pane/window.
 #
 # Arguments:
@@ -161,8 +214,8 @@ load_window() {
     if [ $# -gt 1 ]; then
       window="$2"
     else
-      window="${1/%.window.sh}"
+      window="${1/%.window.sh/}"
-      window="${window/%.sh}"
+      window="${window/%.sh/}"
     fi
     source "$file"
     window=
@@ -184,31 +237,39 @@ load_window() {
 #   - $2: (optional) Override default window name.
 #
 load_session() {
-  local file="$1"
+  local file
-  if [ ! -f "$file" ]; then
+  if [ "${1#*/}" = "$1" ]; then
-    file="$TMUXIFIER_LAYOUT_PATH/$1.session.sh"
+    # There's no slash in the path.
-  fi
+    if [ -f "$TMUXIFIER_LAYOUT_PATH/$1.session.sh" ] || [ ! -f "$1" ]; then
-
+      file="$TMUXIFIER_LAYOUT_PATH/$1.session.sh"
-  if [ -f "$file" ]; then
-    if [ $# -gt 1 ]; then
-      session="$2"
     else
-      session="${1/%.session.sh}"
+      # bash's 'source' requires an slash in the filename to not use $PATH.
-      session="${session/%.sh}"
+      file="./$1"
-    fi
-
-    set_default_path=true
-    source "$file"
-    session=
-
-    # Reset `$session_root`.
-    if [[ "$session_root" != "$HOME" ]]; then
-      session_root="$HOME"
     fi
   else
+    file="$1"
+  fi
+
+  if ! [ -f "$file" ]; then
     echo "\"$1\" session layout not found." >&2
     return 1
   fi
+
+  if [ $# -gt 1 ]; then
+    session="$2"
+  else
+    session="${1/%.session.sh/}"
+    session="${session/%.sh/}"
+  fi
+
+  set_default_path=true
+  source "$file"
+  session=
+
+  # Reset `$session_root`.
+  if [[ "$session_root" != "$HOME" ]]; then
+    session_root="$HOME"
+  fi
 }
 
 # Create a new session, returning 0 on success, 1 on failure.
@@ -232,40 +293,45 @@ initialize_session() {
   tmuxifier-tmux start-server
 
   # Check if the named session already exists.
-  if ! tmuxifier-tmux has-session -t "$session:" 2>/dev/null; then
+  if tmuxifier-tmux list-sessions | grep -q "^$session:"; then
-    if [ "$(tmuxifier-tmux-version "1.9")" == "<" ]; then
+    return 1
-      # Tmux 1.8 and earlier.
+  fi
 
-      # Create the new session.
+  # Tmux 1.8 and earlier.
-      env TMUX="" tmuxifier-tmux new-session -d -s "$session"
+  if [ "$(tmuxifier-tmux-version "1.9")" == "<" ]; then
+    # Create the new session.
+    env TMUX="" tmuxifier-tmux new-session -d -s "$session"
 
-      # Set default-path for session
+    # Set default-path for session
-      if [ -n "$session_root" ] && [ -d "$session_root" ]; then
+    if [ -n "$session_root" ] && [ -d "$session_root" ]; then
-        cd "$session_root"
+      cd "$session_root"
 
-        $set_default_path && tmuxifier-tmux \
+      $set_default_path && tmuxifier-tmux \
-          set-option -t "$session:" \
+        set-option -t "$session:" \
-          default-path "$session_root" 1>/dev/null
+        default-path "$session_root" 1> /dev/null
-      fi
-    else
-      # Tmux 1.9 and later.
-      if $set_default_path; then local session_args=(-c "$session_root"); fi
-      env TMUX="" tmuxifier-tmux new-session \
-        -d -s "$session" "${session_args[@]}"
     fi
 
-    # In order to ensure only specified windows are created, we move the
+  # Tmux 1.9 and later.
-    # default window to position 999, and later remove it with the
+  else
-    # `finalize_and_go_to_session` function.
+    if $set_default_path; then
-    local first_window_index=$(__get_first_window_index)
+      local session_args=(-c "$session_root")
-    tmuxifier-tmux move-window \
+    fi
-      -s "$session:$first_window_index" -t "$session:999"
 
-    # Session created, return ok exit status.
+    env TMUX="" tmuxifier-tmux new-session \
-    return 0
+      -d -s "$session" "${session_args[@]}"
   fi
-  # Session already existed, return error exit status.
+
-  return 1
+  if $set_default_path && [[ "$session_root" != "$HOME" ]]; then
+    tmuxifier-tmux setenv -t "$session:" \
+      TMUXIFIER_SESSION_ROOT "$session_root"
+  fi
+
+  # In order to ensure only specified windows are created, we move the
+  # default window to position 999, and later remove it with the
+  # `finalize_and_go_to_session` function.
+  local first_window_index=$(__get_first_window_index)
+  tmuxifier-tmux move-window \
+    -s "$session:$first_window_index" -t "$session:999"
 }
 
 # Finalize session creation and then switch to it if needed.
@@ -275,17 +341,15 @@ initialize_session() {
 # a window that was not explicitly created. Hence we kill it.
 #
 # If the session was created, we've already been switched to it. If it was not
-# created, the session already exists, and we'll need to specifically switch
+# created, but already existed, then we'll need to specifically switch to it.
-# to it here.
 #
 finalize_and_go_to_session() {
-  ! tmuxifier-tmux kill-window -t "$session:999" 2>/dev/null
+  ! tmuxifier-tmux kill-window -t "$session:999" 2> /dev/null
   if [[ "$(tmuxifier-current-session)" != "$session" ]]; then
     __go_to_session
   fi
 }
 
-
 #
 # Internal functions
 #
@@ -303,7 +367,7 @@ __expand_path() {
 
 __get_first_window_index() {
   local index=$(tmuxifier-tmux list-windows -t "$session:" \
-    -F "#{window_index}" 2>/dev/null)
+    -F "#{window_index}" 2> /dev/null)
 
   if [ -n "$index" ]; then
     echo "$index" | head -1
@@ -312,18 +376,38 @@ __get_first_window_index() {
   fi
 }
 
+__get_current_window_index() {
+  local lookup=$(tmuxifier-tmux list-windows -t "$session:" \
+    -F "#{window_active}:#{window_index}" 2> /dev/null | grep "^1:")
+
+  if [ -n "$lookup" ]; then
+    echo "${lookup/1:/}"
+  fi
+}
+
 __go_to_session() {
   if [ -z "$TMUX" ]; then
-    tmuxifier-tmux -u attach-session -t "$session:"
+    tmuxifier-tmux $TMUXIFIER_TMUX_ITERM_ATTACH -u \
+      attach-session -t "$session:"
   else
     tmuxifier-tmux -u switch-client -t "$session:"
   fi
 }
 
 __go_to_window_or_session_path() {
-  local window_or_session_root=${window_root-$session_root}
+  local target_path
-  if [ -n "$window_or_session_root" ]; then
+
-    run_cmd "cd \"$window_or_session_root\""
+  if [ -n "$window_root" ]; then
-    run_cmd "clear"
+    target_path="$window_root"
+  elif [ -n "$TMUXIFIER_SESSION_ROOT" ]; then
+    target_path="$TMUXIFIER_SESSION_ROOT"
+  elif [ -n "$session_root" ]; then
+    target_path="$session_root"
+  fi
+
+  # local window_or_session_root=${window_root-$session_root}
+  if [ -n "$target_path" ]; then
+    run_cmd " cd \"$target_path\""
+    run_cmd " clear"
   fi
 }

lib/load.sh

@@ -0,0 +1,17 @@
+# Setup layout path.
+if [ -z "${TMUXIFIER_LAYOUT_PATH}" ]; then
+  export TMUXIFIER_LAYOUT_PATH="${TMUXIFIER}/layouts"
+else
+  export TMUXIFIER_LAYOUT_PATH="${TMUXIFIER_LAYOUT_PATH%/}"
+fi
+
+# Add tmuxifier's internal commands to PATH.
+export PATH="$TMUXIFIER/libexec:$PATH"
+
+# Load utility functions.
+source "$TMUXIFIER/lib/util.sh"
+
+# Load command functions from lib/commands/ directory directly.
+source "$TMUXIFIER/lib/commands/alias.sh"
+source "$TMUXIFIER/lib/commands/resolve-command-path.sh"
+source "$TMUXIFIER/lib/commands/tmux-version.sh"

lib/util.sh

@@ -1,11 +1,11 @@
 calling-help() {
-  if [[ " $@ " != *" --help "* ]] && [[ " $@ " != *" -h "* ]]; then
+  if [[ " $* " != *" --help "* ]] && [[ " $* " != *" -h "* ]]; then
     return 1
   fi
 }
 
 calling-complete() {
-  if [[ " $@ " != *" --complete "* ]]; then
+  if [[ " $* " != *" --complete "* ]]; then
     return 1
   fi
 }

libexec/tmuxifier-alias

@@ -1,46 +1,6 @@
 #! /usr/bin/env bash
-set -e
 [ -n "$TMUXIFIER_DEBUG" ] && set -x
 
-# Load internal utility functions.
+source "$TMUXIFIER/lib/load.sh"
-source "$TMUXIFIER/lib/util.sh"
 
-# Provide tmuxifier help
+tmuxifier-alias "$@"
-if calling-help "$@"; then
-  echo "usage: tmuxifier alias <alias>
-
-Resolve a command alias to it's full name."
-  exit
-fi
-
-case "$1" in
-  "session" | "ses" | "s" )
-    echo "load-session"
-    ;;
-  "window" | "win" | "w" )
-    echo "load-window"
-    ;;
-  "new-ses" | "nses" | "ns" )
-    echo "new-session"
-    ;;
-  "new-win" | "nwin" | "nw" )
-    echo "new-window"
-    ;;
-  "edit-ses" | "eses" | "es" )
-    echo "edit-session"
-    ;;
-  "edit-win" | "ewin" | "ew" )
-    echo "edit-window"
-    ;;
-  "l" )
-    echo "list"
-    ;;
-  "list-ses" | "lses" | "ls" )
-    echo "list-sessions"
-    ;;
-  "list-win" | "lwin" | "lw" )
-    echo "list-windows"
-    ;;
-  * )
-    exit 1
-esac

libexec/tmuxifier-commands

@@ -16,7 +16,8 @@ fi
 
 shopt -s nullglob
 
-{ for path in ${PATH//:/$'\n'}; do
+{
+  for path in ${PATH//:/$'\n'}; do
     for command in "${path}/tmuxifier-"*; do
       command="${command##*tmuxifier-}"
       echo "$command"

libexec/tmuxifier-completions

@@ -20,11 +20,11 @@ if calling-complete "$@"; then
 fi
 
 has-completions() {
-  grep -i "^# Provide tmuxifier completions" "$1" >/dev/null
+  grep -i "^# Provide tmuxifier completions" "$1" > /dev/null
 }
 
 if [ -z "$1" ]; then
-  echo "$(tmuxifier-help completions $@)" >&2
+  tmuxifier-help completions "$@" >&2
   exit 1
 fi
 

libexec/tmuxifier-current-session

@@ -14,8 +14,8 @@ Outputs the name of the current Tmux session."
 fi
 
 if [ -n "$TMUX" ]; then
-  for item in $(tmuxifier-tmux list-pane -F "#{session_name}");do
+  for item in $(tmuxifier-tmux list-pane -F "#{session_name}"); do
-    echo $item
+    echo "$item"
     exit 0
   done
 fi

libexec/tmuxifier-edit-session

@@ -22,7 +22,7 @@ if calling-complete "$@"; then
 fi
 
 if [ -z "$1" ]; then
-  echo "$(tmuxifier-help edit-session $@)" >&2
+  tmuxifier-help edit-session "$@" >&2
   exit 1
 fi
 

libexec/tmuxifier-edit-window

@@ -22,7 +22,7 @@ if calling-complete "$@"; then
 fi
 
 if [ -z "$1" ]; then
-  echo "$(tmuxifier-help edit-window $@)" >&2
+  tmuxifier-help edit-window "$@" >&2
   exit 1
 fi
 

libexec/tmuxifier-help

@@ -18,7 +18,7 @@ if calling-complete "$@"; then
 fi
 
 has-help() {
-  grep -i "^# Provide tmuxifier help" "$1" >/dev/null
+  grep -i "^# Provide tmuxifier help" "$1" > /dev/null
 }
 
 if [ -z "$1" ]; then

libexec/tmuxifier-init

@@ -14,25 +14,25 @@ if [ -z "$shell" ]; then
 fi
 
 case "$shell" in
-  bash )
+  bash)
     profile='~/.bash_profile'
     ;;
-  zsh )
+  zsh)
     profile='~/.zshrc'
     ;;
-  ksh )
+  ksh)
     profile='~/.profile'
     ;;
-  csh )
+  csh)
     profile='~/.cshrc'
     ;;
-  tcsh )
+  tcsh)
     profile='~/.tcshrc'
     ;;
-  fish )
+  fish)
     profile='~/.config/fish/config.fish'
     ;;
-  * )
+  *)
     profile='shell init file'
     ;;
 esac
@@ -45,15 +45,15 @@ Load Tmuxifier by adding the following to your ${profile}:
 "
 
   case "$shell" in
-    csh | tcsh )
+    csh | tcsh)
       echo "    eval \`tmuxifier init -\`
 "
       ;;
-    fish )
+    fish)
       echo "    eval (tmuxifier init -)
 "
       ;;
-    * )
+    *)
       echo "    eval \"\$(tmuxifier init -)\"
 "
       ;;
@@ -64,21 +64,26 @@ Load Tmuxifier by adding the following to your ${profile}:
 fi
 
 # Print help if "-" argument is not given
-if [[ " $@ " != *" - "* ]]; then
+if [[ " $* " != *" - "* ]]; then
-  echo "$(tmuxifier-help init $@)" >&2
+  tmuxifier-help init "$@" >&2
   exit 1
 fi
 
 case "$shell" in
-  csh | tcsh )
+  csh | tcsh)
     echo "setenv TMUXIFIER \"$TMUXIFIER\";"
     echo "source \"\$TMUXIFIER/init.tcsh\";"
     ;;
-  fish )
+  fish)
     echo "set -gx TMUXIFIER \"$TMUXIFIER\";"
-    echo "source \"\$TMUXIFIER/init.fish\";"
+    # fish shell 2.0.0 does not have the source alias
+    if [[ $(fish --version 2>&1 | awk -F'version ' '{print $2}') = '2.0.0' ]]; then
+      echo ". \"\$TMUXIFIER/init.fish\";"
+    else
+      echo "source \"\$TMUXIFIER/init.fish\";"
+    fi
     ;;
-  * )
+  *)
     echo "export TMUXIFIER=\"$TMUXIFIER\";"
     echo "source \"\$TMUXIFIER/init.sh\";"
     ;;

libexec/tmuxifier-list-sessions

@@ -15,7 +15,7 @@ List all session layouts."
   exit
 fi
 
-list=$(find -L "$TMUXIFIER_LAYOUT_PATH" -name "*.session.sh")
+list=$(find -L "$TMUXIFIER_LAYOUT_PATH" -name "*.session.sh" | sort)
 for file in $list; do
   file=${file/$TMUXIFIER_LAYOUT_PATH\//}
   echo "${file/.session.sh/}"

libexec/tmuxifier-list-windows

@@ -15,7 +15,7 @@ List all window layouts."
   exit
 fi
 
-list=$(find -L "$TMUXIFIER_LAYOUT_PATH" -name "*.window.sh")
+list=$(find -L "$TMUXIFIER_LAYOUT_PATH" -name "*.window.sh" | sort)
 for file in $list; do
   file=${file/$TMUXIFIER_LAYOUT_PATH\//}
   echo "${file/.window.sh/}"

libexec/tmuxifier-load-session

@@ -7,12 +7,19 @@ source "$TMUXIFIER/lib/util.sh"
 
 # Provide tmuxifier help
 if calling-help "$@"; then
-  echo "usage: tmuxifier load-session <layout_name | file_path>
+  echo "usage: tmuxifier load-session <layout_name | file_path> [<iterm mode>]
 
 Aliases: session, ses, s
 
 Create a session using the session layout, unless the session already exists
-in which case, we simply attach/switch to the existing one."
+in which case, we simply attach/switch to the existing one.
+
+Arguments:
+   <layout_name | file_path>  - Name of a session layout stored in the layouts
+                                directory, or path to a session layout file.
+   <iterm mode>               - When given as \"-CC\" tmux will be called with
+                                the -CC argument enabling iTerm2 integration.
+                                More info: https://iterm2.com"
   exit
 fi
 
@@ -23,12 +30,16 @@ if calling-complete "$@"; then
 fi
 
 if [ -z "$1" ]; then
-  echo "$(tmuxifier-help load-session $@)" >&2
+  tmuxifier-help load-session "$@" >&2
   exit 1
 fi
 
 # Load runtime functions.
 source "$TMUXIFIER/lib/runtime.sh"
 
+if [ "$2" == "-CC" ]; then
+  export TMUXIFIER_TMUX_ITERM_ATTACH="-CC"
+fi
+
 # Load session file.
 load_session "$1"

libexec/tmuxifier-load-window

@@ -11,7 +11,11 @@ if calling-help "$@"; then
 
 Aliases: window, win, w
 
-Create a new window using the specified window layout in the current session."
+Create a new window using the specified window layout in the current session.
+
+Arguments:
+   <layout_name | file_path>  - Name of a window layout stored in the layouts
+                                directory, or path to a window layout file."
   exit
 fi
 
@@ -22,14 +26,14 @@ if calling-complete "$@"; then
 fi
 
 if [ -z "$1" ]; then
-  echo "$(tmuxifier-help load-window $@)" >&2
+  tmuxifier-help load-window "$@" >&2
   exit 1
 fi
 
 # Load runtime functions.
 source "$TMUXIFIER/lib/runtime.sh"
 
-if [ ! -z $TMUX ]; then
+if [ ! -z "$TMUX" ]; then
   session="$(tmuxifier-current-session)"
   load_window "$1"
 else

libexec/tmuxifier-new-session

@@ -22,7 +22,7 @@ if calling-complete "$@"; then
 fi
 
 if [ -z "$1" ]; then
-  echo "$(tmuxifier-help new-session $@)" >&2
+  tmuxifier-help new-session "$@" >&2
   exit 1
 fi
 

libexec/tmuxifier-new-window

@@ -22,7 +22,7 @@ if calling-complete "$@"; then
 fi
 
 if [ -z "$1" ]; then
-  echo "$(tmuxifier-help new-window $@)" >&2
+  tmuxifier-help new-window "$@" >&2
   exit 1
 fi
 

libexec/tmuxifier-resolve-command-path

@@ -1,30 +1,6 @@
 #! /usr/bin/env bash
-set -e
 [ -n "$TMUXIFIER_DEBUG" ] && set -x
 
-# Load internal utility functions.
+source "$TMUXIFIER/lib/load.sh"
-source "$TMUXIFIER/lib/util.sh"
 
-# Provide tmuxifier help
+tmuxifier-resolve-command-path "$@"
-if calling-help "$@"; then
-  echo "usage: tmuxifier resolve-command-path <command_or_alias>
-
-Outputs the absolute path to the given command or command alias."
-  exit
-fi
-
-if [ -n "$1" ]; then
-  ! command_path="$(command -v "tmuxifier-$1")"
-  if [ -z "$command_path" ]; then
-    resolved="$(tmuxifier-alias "$1")"
-    if [ -n "$resolved" ]; then
-      ! command_path="$(command -v "tmuxifier-$resolved")"
-    fi
-  fi
-fi
-
-if [ -n "$command_path" ]; then
-  echo "$command_path"
-else
-  exit 1
-fi

libexec/tmuxifier-tmux-version

@@ -1,60 +1,6 @@
 #! /usr/bin/env bash
-shopt -s extglob
 [ -n "$TMUXIFIER_DEBUG" ] && set -x
 
-# Load internal utility functions.
+source "$TMUXIFIER/lib/load.sh"
-source "$TMUXIFIER/lib/util.sh"
 
-# Provide tmuxifier help
+tmuxifier-tmux-version "$@"
-if calling-help "$@"; then
-  echo "usage: tmuxifier tmux-version [target-version]
-
-Outputs current Tmux version. If given optional target-version it outputs one
-of three possible characters indicating if the current Tmux version number is
-equal to, less than, or greater than the [target-version].
-
-The three possible outputs are \"=\", \"<\", and \">\"."
-  exit
-fi
-
-# The vercomp() function is shamelessly ripped/borrowed from the following
-# StackOverflow answer: http://stackoverflow.com/a/4025065/42146
-vercomp () {
-  if [[ $1 == $2 ]]; then return 0; fi
-
-  local IFS=.
-  local i ver1=($1) ver2=($2)
-
-  # fill empty fields in ver1 with zeros
-  for ((i=${#ver1[@]}; i<${#ver2[@]}; i++)); do ver1[i]=0; done
-
-  for ((i=0; i<${#ver1[@]}; i++)); do
-    # fill empty fields in ver2 with zeros
-    if [[ -z ${ver2[i]} ]]; then ver2[i]=0; fi
-
-    if ((10#${ver1[i]} > 10#${ver2[i]})); then
-      return 1
-    elif ((10#${ver1[i]} < 10#${ver2[i]})); then
-      return 2
-    fi
-  done
-  return 0
-}
-
-version=$(tmux -V)
-version=${version/tmux /}
-
-if [ -n "$1" ]; then
-  # Fix for "1.9a" version comparison, as vercomp() can only deal with
-  # purely numeric version numbers.
-  version=${version//+([a-zA-Z])/}
-
-  vercomp "$version" "$1"
-  case $? in
-    0) echo '=';;
-    1) echo '>';;
-    2) echo '<';;
-  esac
-else
-  echo "$version"
-fi

libexec/tmuxifier-version

@@ -13,4 +13,4 @@ Outputs Tmuxifier version."
   exit
 fi
 
-echo "0.11.5"
+echo "0.13.0"

test/lib/env.test.sh

@@ -0,0 +1,33 @@
+#! /usr/bin/env bash
+source "../test-helper.sh"
+
+#
+# env.sh tests.
+#
+
+# Setup.
+realTMUXIFIER="$TMUXIFIER"
+TMUXIFER="/path/to/tmuxifier"
+
+# When TMUXIFIER_LAYOUT_PATH is not set.
+source "${root}/lib/env.sh"
+assert 'echo $TMUXIFIER_LAYOUT_PATH' "${TMUXIFIER}/layouts"
+
+# When TMUXIFIER_LAYOUT_PATH is set and has a trailing slash.
+TMUXIFIER_LAYOUT_PATH="/path/to/layouts/"
+source "${root}/lib/env.sh"
+assert 'echo $TMUXIFIER_LAYOUT_PATH' "/path/to/layouts"
+unset TMUXIFIER_LAYOUT_PATH
+
+# When TMUXIFIER_LAYOUT_PATH is set and does not have a trailing slash.
+TMUXIFIER_LAYOUT_PATH="/path/to/layouts"
+source "${root}/lib/env.sh"
+assert 'echo $TMUXIFIER_LAYOUT_PATH' "/path/to/layouts"
+unset TMUXIFIER_LAYOUT_PATH
+
+# Tear down.
+TMUXIFER="$realTMUXIFIER"
+unset realTMUXIFIER
+
+# End of tests.
+assert_end "env.sh"

test/lib/layout-helpers/__expand_path.test.sh

@@ -0,0 +1,27 @@
+#! /usr/bin/env bash
+source "../../test-helper.sh"
+source "${root}/lib/layout-helpers.sh"
+
+#
+# __expand_path() tests.
+#
+
+# Setup.
+realHOME="$HOME"
+HOME="/home/test-user"
+
+# When given a path containing "~", it expands "~" to "$HOME".
+assert '__expand_path "~/Foo/Bar"' "${HOME}/Foo/Bar"
+
+# When given a path without "~", it returns path as is.
+assert '__expand_path "/path/to/file"' "/path/to/file"
+
+# When given a path containing spaces, it returns path correctly.
+assert '__expand_path "~/Path To/File"' "${HOME}/Path To/File"
+
+# Tear down.
+HOME="$realHOME"
+unset realHOME
+
+# End of tests.
+assert_end "__expand_path()"

test/lib/layout-helpers/__get_current_window_index.test.sh

@@ -0,0 +1,48 @@
+#! /usr/bin/env bash
+source "../../test-helper.sh"
+source "${root}/lib/layout-helpers.sh"
+
+#
+# __get_current_window_index() tests.
+#
+
+# When current window is the first and only window.
+create-test-session
+assert "__get_current_window_index" "0"
+kill-test-session
+
+# When creating a second window.
+create-test-session
+test-socket-tmux new-window -t "$session:1"
+assert "__get_current_window_index" "1"
+kill-test-session
+
+# When creating a second window and then switching back to the first window.
+create-test-session
+test-socket-tmux new-window -t "$session:1"
+test-socket-tmux select-window -t "$session:0"
+assert "__get_current_window_index" "0"
+kill-test-session
+
+# When creating multiples windows and switching between them randomly.
+create-test-session
+assert "__get_current_window_index" "0"
+test-socket-tmux new-window -t "$session:1"
+assert "__get_current_window_index" "1"
+test-socket-tmux new-window -t "$session:2"
+assert "__get_current_window_index" "2"
+test-socket-tmux new-window -t "$session:3"
+assert "__get_current_window_index" "3"
+test-socket-tmux select-window -t "$session:1"
+assert "__get_current_window_index" "1"
+test-socket-tmux select-window -t "$session:0"
+assert "__get_current_window_index" "0"
+test-socket-tmux select-window -t "$session:3"
+assert "__get_current_window_index" "3"
+test-socket-tmux select-window -t "$session:2"
+assert "__get_current_window_index" "2"
+kill-test-session
+
+
+# End of tests.
+assert_end "__get_current_window_index()"

test/lib/layout-helpers/__get_first_window_index.test.sh

@@ -0,0 +1,30 @@
+#! /usr/bin/env bash
+source "../../test-helper.sh"
+source "${root}/lib/layout-helpers.sh"
+
+#
+# __get_first_window_index() tests.
+#
+
+# When first window has a index of 0.
+create-test-session
+assert "__get_first_window_index" "0"
+kill-test-session
+
+# When first window has a index of 1.
+create-test-session
+test-socket-tmux new-window -t "$session:1"
+test-socket-tmux kill-window -t "$session:0"
+assert "__get_first_window_index" "1"
+kill-test-session
+
+# When first window has a index of 2.
+create-test-session
+test-socket-tmux new-window -t "$session:2"
+test-socket-tmux kill-window -t "$session:0"
+assert "__get_first_window_index" "2"
+kill-test-session
+
+
+# End of tests.
+assert_end "__get_first_window_index()"

test/lib/layout-helpers/__go_to_session.test.sh

@@ -0,0 +1,42 @@
+#! /usr/bin/env bash
+source "../../test-helper.sh"
+source "${root}/lib/layout-helpers.sh"
+
+#
+# __go_to_session() tests.
+#
+
+# Setup.
+session="tmuxifier-test-session"
+
+# When TMUX is not set, attach to $session.
+stub tmuxifier-tmux
+__go_to_session
+assert_raises \
+  "stub_called_with tmuxifier-tmux -u attach-session -t \"${session}:\"" 0
+restore tmuxifier-tmux
+
+# When TMUXIFIER_TMUX_ITERM_ATTACH is set, pass it in as first argument(s) to
+# tmuxifier-tmux
+TMUXIFIER_TMUX_ITERM_ATTACH="-CC"
+stub tmuxifier-tmux
+__go_to_session
+assert_raises \
+  "stub_called_with tmuxifier-tmux -CC -u attach-session -t \"${session}:\"" 0
+restore tmuxifier-tmux
+unset TMUXIFIER_TMUX_ITERM_ATTACH
+
+# When TMUX is set, switch to $session.
+TMUX="/tmp/tmux-501/default,1203,0"
+stub tmuxifier-tmux
+__go_to_session
+assert_raises \
+  "stub_called_with tmuxifier-tmux -u switch-client -t \"${session}:\"" 0
+restore tmuxifier-tmux
+unset TMUX
+
+# Tear down.
+unset session
+
+# End of tests.
+assert_end "__go_to_session()"

test/lib/layout-helpers/__go_to_window_or_session_path.test.sh

@@ -0,0 +1,88 @@
+#! /usr/bin/env bash
+source "../../test-helper.sh"
+source "${root}/lib/layout-helpers.sh"
+
+#
+# __go_to_window_or_session_path() tests.
+#
+
+# When neither $window_root or $session_root are set, does nothing.
+stub run_cmd
+__go_to_window_or_session_path
+assert "stub_called_times run_cmd" "0"
+restore run_cmd
+
+
+# When only $window_root is set, runs cd to $window_root path.
+stub run_cmd
+window_root="/tmp"
+__go_to_window_or_session_path
+assert 'stub_called_with_times run_cmd cd \"/tmp\"' "1"
+assert 'stub_called_with_times run_cmd clear' "1"
+unset window_root
+restore run_cmd
+
+
+# When only $TMUXIFIER_SESSION_ROOT is set, runs cd to $TMUXIFIER_SESSION_ROOT
+# path.
+stub run_cmd
+TMUXIFIER_SESSION_ROOT="/opt"
+__go_to_window_or_session_path
+assert 'stub_called_with_times run_cmd cd \"/opt\"' "1"
+assert 'stub_called_with_times run_cmd clear' "1"
+unset TMUXIFIER_SESSION_ROOT
+restore run_cmd
+
+
+# When only $session_root is set, runs cd to $session_root path.
+stub run_cmd
+session_root="/usr"
+__go_to_window_or_session_path
+assert 'stub_called_with_times run_cmd cd \"/usr\"' "1"
+assert 'stub_called_with_times run_cmd clear' "1"
+unset session_root
+restore run_cmd
+
+
+# When $window_root and $session_root are set, runs cd to $window_root path.
+stub run_cmd
+window_root="/tmp"
+session_root="/usr"
+__go_to_window_or_session_path
+assert 'stub_called_with_times run_cmd cd \"/tmp\"' "1"
+assert 'stub_called_with_times run_cmd clear' "1"
+unset window_root
+unset session_root
+restore run_cmd
+
+
+# When $TMUXIFIER_SESSION_ROOT and $session_root are set, runs cd to
+# $TMUXIFIER_SESSION_ROOT path.
+stub run_cmd
+TMUXIFIER_SESSION_ROOT="/opt"
+session_root="/usr"
+__go_to_window_or_session_path
+assert 'stub_called_with_times run_cmd cd \"/opt\"' "1"
+assert 'stub_called_with_times run_cmd clear' "1"
+unset TMUXIFIER_SESSION_ROOT
+unset session_root
+restore run_cmd
+
+
+# When $window_root, $TMUXIFIER_SESSION_ROOT, and $session_root are set, runs
+# cd to $window_root path.
+stub run_cmd
+window_root="/tmp"
+TMUXIFIER_SESSION_ROOT="/opt"
+session_root="/usr"
+__go_to_window_or_session_path
+assert 'stub_called_with_times run_cmd cd \"/tmp\"' "1"
+assert 'stub_called_with_times run_cmd clear' "1"
+unset window_root
+unset TMUXIFIER_SESSION_ROOT
+unset session_root
+restore run_cmd
+
+
+# End of tests.
+assert_end "__go_to_window_or_session_path()"

test/lib/layout-helpers/new_window.test.sh

@@ -0,0 +1,59 @@
+#! /usr/bin/env bash
+source "../../test-helper.sh"
+source "${root}/lib/layout-helpers.sh"
+
+#
+# new_window() tests.
+#
+
+# When called without arguments, creates new window.
+create-test-session
+stub __go_to_window_or_session_path
+assert "test-socket-window-count" "1"
+new_window
+assert "test-socket-window-count" "2"
+assert "stub_called_times __go_to_window_or_session_path" "1"
+restore __go_to_window_or_session_path
+kill-test-session
+
+# When called with name argument, creates new window with specified name.
+create-test-session
+stub __go_to_window_or_session_path
+assert "test-socket-window-count yippieezzz" "0"
+new_window "yippieezzz"
+assert "test-socket-window-count" "2"
+assert "test-socket-window-count yippieezzz" "1"
+restore __go_to_window_or_session_path
+kill-test-session
+
+# When called with name and command argument, creates new window with
+# specified name and executes given command.
+rm "/tmp/tmuxifier-new_window-test" &> /dev/null
+create-test-session
+stub __go_to_window_or_session_path
+new_window "foobardoo" "touch /tmp/tmuxifier-new_window-test; bash"
+assert "test-socket-window-count" "2"
+assert "test-socket-window-count foobardoo" "1"
+sleep 0.1 # attempt to avoid timing issue causing flicker
+assert_raises 'test -f "/tmp/tmuxifier-new_window-test"' 0
+restore __go_to_window_or_session_path
+kill-test-session
+rm "/tmp/tmuxifier-new_window-test" &> /dev/null
+
+# When called ensure it sets the $window variable to the index of the newly
+# created window.
+unset window
+create-test-session
+stub __go_to_window_or_session_path
+new_window "foo"
+assert "echo $window" "1"
+new_window
+assert "echo $window" "2"
+new_window "bar"
+assert "echo $window" "3"
+restore __go_to_window_or_session_path
+kill-test-session
+unset window
+
+# End of tests.
+assert_end "new_window()"

test/lib/layout-helpers/select_window.test.sh

@@ -0,0 +1,55 @@
+#! /usr/bin/env bash
+source "../../test-helper.sh"
+source "${root}/lib/layout-helpers.sh"
+
+#
+# select_window() tests.
+#
+
+window_list() {
+  test-socket-tmux list-windows -t "$session:" \
+    -F "#{window_active}:#{window_index}" 2>/dev/null
+}
+
+# Selects given window when passed a window index
+create-test-session
+test-socket-tmux new-window -t "$session:1"
+test-socket-tmux new-window -t "$session:2"
+select_window 0
+assert "window_list | grep '^1:'" "1:0"
+select_window 1
+assert "window_list | grep '^1:'" "1:1"
+select_window 2
+assert "window_list | grep '^1:'" "1:2"
+kill-test-session
+
+# Selects given window when passed a window name
+create-test-session
+test-socket-tmux new-window -t "$session:1" -n "foo"
+test-socket-tmux new-window -t "$session:2" -n "bar"
+select_window foo
+assert "window_list | grep '^1:'" "1:1"
+select_window bar
+assert "window_list | grep '^1:'" "1:2"
+kill-test-session
+
+
+# When called ensure it sets the $window variable to the index of the newly
+# created window.
+unset window
+create-test-session
+test-socket-tmux new-window -t "$session:1" -n "foo"
+test-socket-tmux new-window -t "$session:2" -n "bar"
+select_window "foo"
+assert "echo $window" "1"
+select_window "bar"
+assert "echo $window" "2"
+select_window 1
+assert "echo $window" "1"
+select_window 2
+assert "echo $window" "2"
+kill-test-session
+unset window
+
+# End of tests.
+assert_end "select_window()"

test/lib/layout-helpers/tmux.test.sh

@@ -0,0 +1,20 @@
+#! /usr/bin/env bash
+source "../../test-helper.sh"
+source "${root}/lib/layout-helpers.sh"
+
+#
+# tmux() tests.
+#
+
+# Passes all arguments to tmuxifier-tmux.
+stub tmuxifier-tmux
+tmux -V
+tmux --help
+tmux new -s dude
+assert_raises "stub_called_with tmuxifier-tmux -V" 0
+assert_raises "stub_called_with tmuxifier-tmux --help" 0
+assert_raises "stub_called_with tmuxifier-tmux new -s dude" 0
+restore tmuxifier-tmux
+
+# End of tests.
+assert_end "tmux()"

test/lib/runtime.test.sh

@@ -0,0 +1,23 @@
+#! /usr/bin/env bash
+source "../test-helper.sh"
+
+#
+# runtime.sh tests.
+#
+
+source "${root}/lib/runtime.sh"
+
+# We assume env.sh has been sourced if $TMUXIFIER_LAYOUT_PATH has been set.
+assert 'echo $TMUXIFIER_LAYOUT_PATH' "${TMUXIFIER}/layouts"
+
+# We ensure $session_root is set to $HOME by default.
+assert 'echo $session_root' "$HOME"
+
+# We assume layout-helpers.sh has been sourced if a few of them are available.
+for helper in new_window split_v split_h select_window select_pane; do
+  assert "type $helper | head -1" "$helper is a function"
+done
+
+
+# End of tests.
+assert_end "runtime.sh"

test/lib/util.test.sh

@@ -0,0 +1,58 @@
+#! /usr/bin/env bash
+source "../test-helper.sh"
+source "${root}/lib/util.sh"
+
+#
+# calling-help() tests.
+#
+
+# Returns 0 when "--help" is part of passed arguments.
+assert_raises 'calling-help --help' 0
+assert_raises 'calling-help foo --help' 0
+assert_raises 'calling-help --help bar' 0
+assert_raises 'calling-help foo --help bar' 0
+
+# Returns 0 when "-h" is part of passed arguments.
+assert_raises 'calling-help -h' 0
+assert_raises 'calling-help foo -h' 0
+assert_raises 'calling-help -h bar' 0
+assert_raises 'calling-help foo -h bar' 0
+
+# Returns 1 when neither "--help" or "-h" is not part of passed arguments.
+assert_raises 'calling-help' 1
+assert_raises 'calling-help foo' 1
+assert_raises 'calling-help foo bar' 1
+
+# Returns 1 when "--help" is part of passed arguments, but not free-standing.
+assert_raises 'calling-help --help-me' 1
+assert_raises 'calling-help foo--help' 1
+
+# Returns 1 when "-h" is part of passed arguments, but not free-standing.
+assert_raises 'calling-help -hj' 1
+assert_raises 'calling-help welcome-home' 1
+
+# End of tests.
+assert_end "calling-help()"
+
+
+#
+# calling-complete() tests.
+#
+
+# Returns 0 when "--complete" is part of passed arguments.
+assert_raises 'calling-complete --complete' 0
+assert_raises 'calling-complete foo --complete' 0
+assert_raises 'calling-complete --complete bar' 0
+assert_raises 'calling-complete foo --complete bar' 0
+
+# Returns 1 when "--complete" is not part of passed arguments.
+assert_raises 'calling-complete' 1
+assert_raises 'calling-complete foo' 1
+assert_raises 'calling-complete foo bar' 1
+
+# Returns 1 when "--complete" is part of passed arguments, but not free-standing.
+assert_raises 'calling-complete --complete-me' 1
+assert_raises 'calling-complete foo--complete' 1
+
+# End of tests.
+assert_end "calling-complete()"

test/libexec/tmuxifier-tmux.test.sh

@@ -0,0 +1,22 @@
+#! /usr/bin/env bash
+source "../test-helper.sh"
+source "${root}/lib/util.sh"
+
+#
+# tmuxifier-tmux tests.
+#
+
+# Setup.
+libexec="${root}/libexec"
+test-socket-tmux new-session -d -s foobar
+test-socket-tmux new-session -d -s dude
+
+# Passes all arguments to Tmux.
+assert "${libexec}/tmuxifier-tmux list-sessions -F \"- #{session_name}\"" \
+       "- dude\n- foobar"
+
+# Tear down.
+kill-test-server
+
+# End of tests.
+assert_end "tmuxifier-tmux"

test/test-helper.sh

@@ -0,0 +1,87 @@
+[ -n "$TEST_DEBUG" ] && set -x
+
+resolve_link() {
+  $(type -p greadlink readlink | head -1) $1
+}
+
+abs_dirname() {
+  local cwd="$(pwd)"
+  local path="$1"
+
+  while [ -n "$path" ]; do
+    cd "${path%/*}"
+    local name="${path##*/}"
+    path="$(resolve_link "$name" || true)"
+  done
+
+  pwd
+  cd "$cwd"
+}
+
+# Find and store path to Tmux binary.
+TMUX_BIN="$(command -v tmux)"
+
+# Set testroot variable.
+testroot="$(abs_dirname "$BASH_SOURCE")"
+
+# Set root variable.
+root="$(abs_dirname "$testroot/../..")"
+
+# Set TMUXIFIER environment variable.
+TMUXIFIER="$root"
+
+# Setup PATH environment variable.
+PATH="$root/bin:$root/libexec:$PATH"
+
+# Unset TMUX environment variable, tests assume they're not running within
+# Tmux.
+unset TMUX
+
+# Unset various Tmuxifier environment variables to prevent a local install of
+# Tmuxifier interfering with tests.
+unset TMUXIFIER_LAYOUT_PATH
+unset TMUXIFIER_TMUX_OPTS
+unset TMUXIFIER_NO_COMPLETE
+
+# Include assert.sh and stub.sh libraries.
+source "${testroot}/assert.sh"
+source "${testroot}/stub.sh"
+
+
+#
+# Test Helpers
+#
+
+test-socket-tmux() {
+  export TMUXIFIER_TMUX_OPTS="-L tmuxifier-tests"
+  "$TMUX_BIN" $TMUXIFIER_TMUX_OPTS $@
+}
+
+create-test-session() {
+  session="$1"
+  if [ -z "$session" ]; then session="test"; fi
+
+  test-socket-tmux new-session -d -s "$session"
+}
+
+kill-test-session() {
+  local target="$1"
+  if [ -z "$target" ]; then target="$session"; fi
+
+  test-socket-tmux kill-session -t "$target"
+}
+
+kill-test-server() {
+  test-socket-tmux kill-server
+  unset TMUXIFIER_TMUX_OPTS
+  unset session
+}
+
+test-socket-window-count() {
+  local list="$(test-socket-tmux list-windows)"
+  if [ -n "$1" ]; then
+    echo "$list" | grep $1 | wc -l | awk '{print $1}'
+  else
+    echo "$list" | wc -l | awk '{print $1}'
+  fi
+}

tmuxifier.tmux

@@ -0,0 +1 @@
+#!/usr/bin/env bash