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This is a plugin for the Glyphs font editor. It highlights BCPs (‘handles’) which are not horizontal or vertical, quite-but-not-completely-straight line segments, duplicate path segments, crossed handles (i.e., BCPs with more than 100% length), and zero handles. After installation, it will add the menu item View > Show Angled Handles (Cmd-Y, de: Schräge Anfasser anzeigen, es: Mostrar manejadores inclinados, fr: Afficher les poignées inclinées, zh: ⚖️路径检查工具).

Angled Handles are marked red.


  1. Open Window > Plugin Manager
  2. Click the Install button next to ’Show Angled Handles’
  3. Restart

Usage Instructions

  1. Open a glyph in Edit View.
  2. Use View > Show Angled Handles (Cmd-Y) to toggle the highlighting.


Access display options in the context menu (Ctrl- or right-click):

![Show Angled Handles Options](ShowAngledHandles Options.png)

You can set a different keyboard shortcut (i.e., other than Cmd-Y) by typing this in the Macro window (Window > Macro Panel) and pressing the Run button:

Glyphs.defaults["com.mekkablue.ShowAngledHandles.keyboardShortcut"] = "l"

In this example, the shortcut is changed to Cmd-L. Instead of l, you can take any other key on your keyboard, of course. Restart Glyphs for the changes to take effect.


The plugin requires a recent app version, running on OS X 10.9.1 or later. If it does not work for you, please update your app to the latest version.


Copyright 2013 Rainer Erich Scheichelbauer (@mekkablue). ObjC update copyright 2019 by Georg Seifert (@schriftgestalt).

Based on sample code by Georg Seifert (@schriftgestalt) and Jan Gerner (@yanone).

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

See the License file included in this repository for further details.


Glyphs Plugin for highlighting BCPs which are not completely horizontal or vertical (menu item View > Show Angled Handles)




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