Update fish prompt

Adding lots of good stuff for colors and host names

assets/default/fish/custom/themes/thefij/fish_prompt.fish

@@ -1,13 +1,24 @@
-# name: RobbyRussel
+# name: ifij (forked from RobbyRussel)
 #
 # You can override some default options in your config.fish:
 #   set -g theme_display_git_untracked no
 
+function _status_color
+  # Returns a color for successful or failed previous command
+  if test $last_status -eq 0
+      echo (set_color -o green)
+  else
+      echo (set_color -o red)
+  end
+end
+
 function _git_branch_name
+  # Returns the name of the current git branch
   echo (command git symbolic-ref HEAD ^/dev/null | sed -e 's|^refs/heads/||')
 end
 
 function _is_git_dirty
+  # Returns whether or not there is anything uncommitted
   set -l show_untracked (git config --bool bash.showUntrackedFiles)
   set untracked ''
   if [ "$theme_display_git_untracked" = 'no' -o "$show_untracked" = 'false' ]
@@ -16,16 +27,43 @@ function _is_git_dirty
   echo (command git status -s --ignore-submodules=dirty $untracked ^/dev/null)
 end
 
-function _prompt_char
-  if [ (whoami) = 'root' ]
-    echo '#'
+function _git_info
+  # Returns what is to be displayed for the git info
+  if [ (_git_branch_name) ]
+    if [ (_is_git_dirty) ]
+        set branch_color (set_color -o red)
     else
-    echo '$'
+        set branch_color (set_color -o yellow)
+    end
+    set -l git_branch (_git_branch_name)
+    echo " $branch_color($git_branch)"(set_color normal)
   end
 end
 
+function _hostname
+  # Returns the hostname if not using tmux since tmux will display
+  if [ -z $TMUX ]
+    echo (hostname)" "
+  end
+end
+
+function _prompt_char
+  # Gives a colored prompt char for user or root
+  echo -n (_status_color)
+  if [ (whoami) = 'root' ]
+    echo -n '#'
+  else
+    echo -n '$'
+  end
+  echo -n (set_color normal)
+end
+
 function fish_prompt
-  set -l last_status $status
+  # Build full left side prompt
+
+  # NOTE: this becomes a global variable
+  set -g last_status $status
+
   set -l cyan (set_color -o cyan)
   set -l yellow (set_color -o yellow)
   set -l red (set_color -o red)
@@ -33,23 +71,9 @@ function fish_prompt
   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 $normal(basename (prompt_pwd))
+  set -l arrow (_status_color) "➜ $normal"
+  set -l cwd (basename (prompt_pwd))
 
-  if [ (_git_branch_name) ]
-    if [ (_is_git_dirty) ]
-        set branch_color "$red"
-    else
-        set branch_color "$yellow"
-    end
-    set -l git_branch (_git_branch_name)
-    set git_info " $branch_color($git_branch)"
-  end
-
-  echo -n -s $arrow $cwd $git_info $normal (_prompt_char) ' '
+  echo -n -s $arrow (_hostname) $cwd (_git_info) (_prompt_char) ' '
 end