[Diff][Fixed] problems when using things like "origin/main"

- and add_link_id

Fixes #589

CHANGELOG.md

@@ -18,7 +18,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Filters: _none filter not always honored (i.e. exclude in BoM) (#580)
 - PCB Parity: components excluded from the board reported anyways (#585)
 - BoardView: X axis mirroring issues (whitequark/kicad-boardview#11)
-- Present: Problems when using gerbers already generated
+- Present: problems when using gerbers already generated
+- Diff: problems when using things like "origin/main" and add_link_id (#589)
 
 ## [1.6.4] - 2024-02-02
 ### Added

kibot/out_diff.py

@@ -486,7 +486,10 @@ def do_compare(self, old, old_type, new, new_type, name, name_ori):
             GS.exit_with_error(None, FAILED_EXECUTE, e)
         if self.add_link_id:
             name_comps = os.path.splitext(name_ori)
-            target = name_comps[0]+'_'+gh1+'-'+gh2+name_comps[1]
+            extra = '_'+gh1+'-'+gh2
+            # Replace things like "origin/main" by "origin_main"
+            extra = extra.replace('/', '_')
+            target = name_comps[0]+extra+name_comps[1]
             if self.copy_instead_of_link:
                 copy2(name, target)
             else: