use builtin fish git prompt

fish/.config/fish/config.fish

@@ -62,3 +62,7 @@ source ~/.config/fish/command_timer.sh
 # Removes greeting message
 set fish_greeting
 
+set -g __fish_git_prompt_show_informative_status 1
+set -g __fish_git_prompt_shorten_branch_len 20
+set -g __fish_git_prompt_showcolorhints 1
+

fish/.config/fish/functions/fish_prompt.fish

@@ -17,65 +17,6 @@ function __bcarlin_prompt_suffix
   echo -n -s ' ' (set_color $color_suffix --bold) "$suffix" (set_color normal) ' '
 end
 
-function __bcarlin_prompt_git
-  set -l git_infos (git status --porcelain --branch ^/dev/null )
-  if test $status -ne 0
-    echo -n -s ''
-    return
-  end
-
-  set -l git_branch (echo $git_infos | grep '##' | sed -e 's/## \([a-zA-Z0-9\/-]\+\)\( \|\.\.\.\|$\).*/\1/')
-  set -l has_untracked false
-  set -l staged_count 0
-  set -l changed_count 0
-  set -l conflict_count 0
-  set -l staged_count 0
-  set -l behind (echo $git_infos | grep '##' | grep behind | sed -e 's|.*behind \([0-9]\+\).*|\1|')
-  set -l ahead (echo $git_infos | grep '##' | grep ahead | sed -e 's|.*ahead \([0-9]\+\).*|\1|')
-
-  for line in $git_infos
-    set -l flags (echo $line | cut -c '-2')
-    set flag1 (string sub -l 1 $flags)
-    set flag2 (string sub -s 2 -l 1 $flags)
-
-    if test $flags = '??'
-      set has_untracked true
-      continue
-    end
-
-    if test $flag1 = 'U' -o $flag2 = 'U'
-      set conflict_count (math $conflict_count + 1)
-      continue
-    end
-
-    if contains $flag1 'M' 'A' 'C' 'R' 'D'
-      set staged_count (math $staged_count + 1)
-    end
-
-    if contains $flag2 'M' 'A' 'R' 'C' 'D'
-      set changed_count (math $changed_count + 1)
-    end
-  end
-
-
-  echo -n -s ' ' (set_color blue) ± (set_color normal) '('
-  echo -n -s (set_color red --bold) $git_branch (set_color normal)
-
-  if test (math $staged_count + $conflict_count + $changed_count) -ne 0 -o  $has_untracked = true
-    echo -n -s '|'
-    test -n "$behind"; and echo -s -n (set_color red) "↓$behind" (set_color normal)
-    test -n "$ahead"; and echo -s -n (set_color green) "↑$ahead" (set_color normal)
-    test $conflict_count -ne 0; and echo -s -n (set_color red) "✖$conflict_count" (set_color normal)
-    test $staged_count -ne 0; and echo -s -n (set_color red) "●$staged_count" (set_color normal)
-    test $changed_count -ne 0; and echo -s -n (set_color blue) "✚$changed_count" (set_color normal)
-    test $has_untracked = true; and echo -s -n '…'
-  else
-    echo -n -s (set_color green --bold) "✔" (set_color normal)
-  end
-
-  echo -n -s ')'
-end
-
 function __bcarlin_prompt_venv
   if test -n "$VIRTUAL_ENV"
     set -l venv_name (basename $VIRTUAL_ENV)
@@ -92,7 +33,7 @@ function fish_prompt --description 'Write out the prompt'
 
   echo -n -s (__bcarlin_prompt_venv)
   echo -n -s "$USER" @ (prompt_hostname) ' ' $_pwd
-  echo -n -s (__bcarlin_prompt_git)
+  echo -n -s (__fish_git_prompt)
   if test $last_status -ne 0
       echo -n -s (set_color red --bold)" [$last_status]" (set_color normal)
   end