Merge pull request #237 from liquid/eclm-theme

Add eclm theme

themes/eclm/README.md

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+## robbyrussell
+Based on the robbyrussell theme.
+
+![robbyrussell theme](https://bachue.github.io/oh-my-fish/images/robbyrussell-screenshot.png)
+
+
+#### Characteristics
+
+* Displays git information in the command prompt when available.
+* Indicates 'master' branch with a distinctive color, encouraging the use of feature-branches (useful when development is done using pull requests)
+* If the last command was failed, the indicator would be red, otherwise it's green

themes/eclm/fish_prompt.fish

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+# name: eclm
+function _git_branch_name
+  echo (command git symbolic-ref HEAD ^/dev/null | sed -e 's|^refs/heads/||')
+end
+
+function _is_git_dirty
+  echo (command git status -s --ignore-submodules=dirty ^/dev/null)
+end
+
+function fish_prompt
+  set -l last_status $status
+  set -l cyan (set_color -o cyan)
+  set -l yellow (set_color -o yellow)
+  set -l red (set_color -o red)
+  set -l blue (set_color -o blue)
+  set -l green (set_color -o green)
+  set -l normal (set_color normal)
+  
+  if test $last_status = 0
+      set arrow "$green➜ "
+  else
+      set arrow "$red➜ "
+  end
+  set -l cwd $cyan(basename (prompt_pwd))
+
+  if [ (_git_branch_name) ]
+
+    if test (_git_branch_name) = 'master'
+      set -l git_branch (_git_branch_name)
+      set git_info "$blue ($yellow$git_branch$blue)"
+    else
+      set -l git_branch (_git_branch_name)
+      set git_info "$blue ($git_branch)$blue"
+    end
+
+    if [ (_is_git_dirty) ]
+      set -l dirty "$yellow ✗"
+      set git_info "$git_info$dirty"
+    end
+  end
+
+  echo -n -s $arrow $cwd $git_info $normal ' '
+end
+