migrate to dotter

configs/fish/functions/_pure_prompt_git.fish

@@ -0,0 +1,26 @@
+function _pure_prompt_git \
+    --description 'Print git repository informations: branch name, dirty, upstream ahead/behind'
+
+    set ABORT_FEATURE 2
+
+    if set --query pure_enable_git; and test "$pure_enable_git" != true
+        return
+    end
+
+    if not type -q --no-functions git  # skip git-related features when `git` is not available
+        return $ABORT_FEATURE
+    end
+
+    set --local is_git_repository (command git rev-parse --is-inside-work-tree 2>/dev/null)
+
+    if test -n "$is_git_repository"
+        set --local git_prompt (_pure_prompt_git_branch)(_pure_prompt_git_dirty)(_pure_prompt_git_stash)
+        set --local git_pending_commits (_pure_prompt_git_pending_commits)
+
+        if test (_pure_string_width $git_pending_commits) -ne 0
+            set --append git_prompt $git_pending_commits
+        end
+
+        echo $git_prompt
+    end
+end