Simple one line prompt with git and RVM

Based on steeef theme, using always-updated vcs_info
and an RVM indicator on the right.

modules/prompt/functions/prompt_skwp_setup

@@ -0,0 +1,92 @@
+#
+# A theme based on steeef theme
+#  * RVM info shown on the right
+#  * Git branch info on the left
+#  * Single line prompt
+#
+# Authors:
+#   Steve Losh <steve@stevelosh.com>
+#   Bart Trojanowski <bart@jukie.net>
+#   Brian Carper <brian@carper.ca>
+#   steeef <steeef@gmail.com>
+#   Sorin Ionescu <sorin.ionescu@gmail.com>
+#   Yan Pritzker <yan@pritzker.ws>
+
+function rvm_info_for_prompt {
+  ruby_version=$(~/.rvm/bin/rvm-prompt)
+  if [ -n "$ruby_version" ]; then
+    echo "[$ruby_version]"
+  fi
+}
+
+function prompt_skwp_precmd {
+  # Check for untracked files or updated submodules since vcs_info doesn't.
+  if [[ ! -z $(git ls-files --other --exclude-standard 2> /dev/null) ]]; then
+    fmt_branch="(${__PROMPT_SKWP_COLORS[1]}%b%f%u%c${__PROMPT_SKWP_COLORS[4]}●%f)"
+  else
+    fmt_branch="(${__PROMPT_SKWP_COLORS[1]}%b%f%u%c)"
+  fi
+  zstyle ':vcs_info:*:prompt:*' formats "${fmt_branch}"
+
+  vcs_info 'prompt'
+}
+
+function prompt_skwp_setup {
+  setopt LOCAL_OPTIONS
+  unsetopt XTRACE KSH_ARRAYS
+  prompt_opts=(cr percent subst)
+
+  autoload -Uz add-zsh-hook
+  autoload -Uz vcs_info
+
+  add-zsh-hook precmd prompt_skwp_precmd
+
+  # Use extended color pallete if available.
+  if [[ $TERM = *256color* || $TERM = *rxvt* ]]; then
+    __PROMPT_SKWP_COLORS=(
+      "%F{81}"  # turquoise
+      "%F{166}" # orange
+      "%F{135}" # purple
+      "%F{161}" # hotpink
+      "%F{118}" # limegreen
+    )
+  else
+    __PROMPT_SKWP_COLORS=(
+      "%F{cyan}"
+      "%F{yellow}"
+      "%F{magenta}"
+      "%F{red}"
+      "%F{green}"
+    )
+  fi
+
+  # Enable VCS systems you use.
+  zstyle ':vcs_info:*' enable bzr git hg svn
+
+  # check-for-changes can be really slow.
+  # You should disable it if you work with large repositories.
+  zstyle ':vcs_info:*:prompt:*' check-for-changes true
+
+  # Formats:
+  # %b - branchname
+  # %u - unstagedstr (see below)
+  # %c - stagedstr (see below)
+  # %a - action (e.g. rebase-i)
+  # %R - repository path
+  # %S - path in the repository
+  local fmt_branch="(${__PROMPT_SKWP_COLORS[1]}%b%f%u%c)"
+  local fmt_action="(${__PROMPT_SKWP_COLORS[5]}%a%f)"
+  local fmt_unstaged="${__PROMPT_SKWP_COLORS[2]}●%f"
+  local fmt_staged="${__PROMPT_SKWP_COLORS[5]}●%f"
+
+  zstyle ':vcs_info:*:prompt:*' unstagedstr   "${fmt_unstaged}"
+  zstyle ':vcs_info:*:prompt:*' stagedstr     "${fmt_staged}"
+  zstyle ':vcs_info:*:prompt:*' actionformats "${fmt_branch}${fmt_action}"
+  zstyle ':vcs_info:*:prompt:*' formats       "${fmt_branch}"
+  zstyle ':vcs_info:*:prompt:*' nvcsformats   ""
+
+  PROMPT="${__PROMPT_SKWP_COLORS[3]}%n%f@${__PROMPT_SKWP_COLORS[2]}%m%f ${__PROMPT_SKWP_COLORS[5]}%~%f "'${vcs_info_msg_0_}'"$ "
+  RPROMPT="%F{blue}"'$(rvm_info_for_prompt)'""
+}
+
+prompt_skwp_setup "$@"