themes: Add new theme 'garo' (#133)

* Extra theme 'garo'

* theme garo: export vars

themes/garo/garo.theme.sh

+#!/usr/bin/env bash
+#
+# One line prompt showing the following configurable information
+# for git:
+# (virtual_env) username pwd git_char|git_branch git_dirty_status|→
+#
+# The → arrow shows the exit status of the last command:
+# - bold green: 0 exit status
+# - bold red: non-zero exit status
+#
+# Example outside git repo:
+# 07:45:05 user@host ~ →
+#
+# Example inside clean git repo:
+# 07:45:05 user@host ~/.oh-my-bash ±|master|→
+#
+# Example inside dirty git repo:
+# 07:45:05 user@host ~/.oh-my-bash ±|master ✗|→
+#
+# Example with virtual environment:
+# 07:45:05 (venv) user@host ~ →
+#
+
+export SCM_NONE_CHAR=''
+export SCM_THEME_PROMPT_DIRTY=" ${red}✗"
+export SCM_THEME_PROMPT_CLEAN=""
+export SCM_THEME_PROMPT_PREFIX="${green}|"
+export SCM_THEME_PROMPT_SUFFIX="${green}|"
+export SCM_GIT_SHOW_MINIMAL_INFO=true
+
+export VIRTUALENV_THEME_PROMPT_PREFIX='('
+export VIRTUALENV_THEME_PROMPT_SUFFIX=') '
+
+function prompt_command() {
+    # This needs to be first to save last command return code
+    local RC="$?"
+
+    hostname="${bold_black}\u"
+    virtualenv="${white}$(virtualenv_prompt)"
+
+    # Set return status color
+    if [[ ${RC} == 0 ]]; then
+        ret_status="${bold_green}"
+    else
+        ret_status="${bold_red}"
+    fi
+
+    # Append new history lines to history file
+    history -a
+
+    PS1="${virtualenv}${hostname} ${bold_cyan}\w $(scm_prompt_char_info)${ret_status}→ ${normal}"
+}
+
+safe_append_prompt_command prompt_command