A simple layer removal tool for FontLab 8

FL8-RemoveLayers.py

#FLM: Remove Layers by Name
#---------------------------------------------------------------
# Removes layers which names contain a given string
#---------------------------------------------------------------
# (C) Vassil Kateliev, 2022 	(http://www.kateliev.com)

# - Dependancies
import fontlab as fl6
import fontgate as fgt

# - Config: 
# -- A partial layer name to search for
str_remove_layer = '#instance'
# -- Remove all glyphs that are associated with layer given
remove_glyphs = True

# - Process 
packages = [fl6.flPackage(font) for font in AllFonts()]

for package in packages:	
	for layer_name in package.masters:
		if str_remove_layer in layer_name:
			package.removeMaster(layer_name, remove_glyphs)
			print('REMOVE:\t Font: {}; Layer: {};'.format(package.path, layer_name))

# - Finish 
print('DONE:\t Remove layers by name!')