pkgs/git-show-link: Normalize paths

pkgs/git-show-link/git-show-link.py

@@ -4,6 +4,7 @@ import argparse
 from dataclasses import dataclass
 import re
 import subprocess
+from pathlib import Path
 
 REMOTE_TYPES = {
     "github": {
@@ -37,9 +38,17 @@ def is_git_repo():
 
     return s.returncode == 0
 
+def get_git_dir():
+    s = subprocess.run(["git", "rev-parse", "--show-toplevel"], capture_output=True, text=True)
+    return Path(s.stdout.strip())
+
 def get_remote_branch():
     s = subprocess.run(["git", "status", "--porcelain", "-uno", "-b", "--no-ahead-behind"], capture_output=True, text=True)
 
+    if s.stdout.startswith("## HEAD (no branch)"):
+        print("Detached head, can't link")
+        exit(1)
+
     git_status_branch_info = s.stdout.splitlines()[0][3:].split()[0]
 
     branches = git_status_branch_info.split("...")
@@ -86,6 +95,8 @@ def main():
 
         exit(1)
 
+    git_dir_path = get_git_dir()
+
     r = get_remote_branch()
 
     remote_url = get_remote_url(r["remote"])
@@ -108,7 +119,17 @@ def main():
         remote_type_found = True
 
         g = FormatArgs(**m.groupdict())
-        g.path = args.path
+
+        if args.path is not None:
+            path = Path(args.path).absolute()
+            path = path.relative_to(git_dir_path)
+
+            path = str(path)
+
+            if path == ".":
+                path = ""
+
+            g.path = path
 
         if args.path is not None:
             if args.display_branch: