Merge pull request #142 from dritter/rust_version

Added Rust version segment.

README.md

@@ -85,6 +85,7 @@ The segments that are currently available are:
 * [ram](#ram) - Show free RAM and used Swap.
 * [rbenv](#rbenv) - Ruby environment information (if one is active).
 * [rspec_stats](#rspec_stats) - Show a ratio of test classes vs code classes for RSpec.
+* **rust_version** - Display the current rust version.
 * [status](#status) - The return code of the previous command, and status of background jobs.
 * [symphony2_tests](#symphony2_tests) - Show a ratio of test classes vs code classes for Symfony2.
 * **symphony2_version** - Show the current Symfony2 version, if you are in a Symfony2-Project dir.

powerlevel9k.zsh-theme

@@ -479,6 +479,15 @@ prompt_rbenv() {
   fi
 }
 
+# print Rust version number
+prompt_rust_version() {
+  local rust_version
+  rust_version=$(rustc --version 2>&1 | grep -oe "^rustc\s*[^ ]*" | grep -o '[0-9.a-z\\\-]*$')
+
+  if [[ -n "$rust_version" ]]; then
+    "$1_prompt_segment" "$0" "208" "$DEFAULT_COLOR" "Rust $rust_version"
+  fi
+}
 # RSpec test ratio
 prompt_rspec_stats() {
   if [[ (-d app && -d spec) ]]; then