Odd "orphan" layer in some glyphs

1

Hi, all my glyphs show a layer (which has content) but whose name is entirely empty. I never created this layer and it seems to contain some older version of a previous layer. Any idea what this is? If I print(layer.name) then I get “orphan”.

image
image870×588 89.4 KB

2

Also, I can’t find out how to bulk-delete it with a script. del(thisGlyph.layer[1]) empties the second master layer, not the actual second layer in the layers panel.

3

Print the list of layer to understand the structure.

4

Okay, I tried del(thisGlyph.layers[-1]). First, that doesn’t work (the layer stays filled), but the layer doesn’t disappear from the layer list. If I try by absolute index (2), then I get an index out of range error. The layer just doesn’t exist, somehow.

5

it is better to iterate the layers to find the one you like to remove and then use the layerId to delete it.

delLayer = None
for l in g.layers:
    if len(l.name) == 0:
        delLayer = l
        break
if delLayer is not None:
    del(g.layers[delLayer.layerId])
6

I’m afraid that didn’t work, either (I substituted “g” by “thisGlyph”, correct?). I don’t get an error message and the empty layer is still there.

7

Upon further blind button mashing I have found that the empty layer doesn’t have a layerId.

image

8

No. In this case: Layer.parent.layers

thisGlyph is not set by Glyphs so that is a from a previous script, and not the current glyph.

9

Thanks a lot. This worked:

for g in Font.glyphs:
	delLayer = None
	for l in g.layers:
		if l.name == None:
			delLayer = l
			break
	if delLayer:
		del(g.layers[delLayer.layerId])

Still no idea how this happened, would be very curious to find out. Thanks a lot for your help!

10

I suspect the layers are produced by some script or plugin.