G4 crash on feature preview

Glyphs
1

When I try to preview with
Glyphs crashes when I turn on this rclt feature in preview.

@StaffContext = [
L
$[name beginswith "L_" and name endswith ".rlig"]
$[name beginswith "T_" and name endswith ".rlig"]
$[name beginswith "B_" and name endswith ".rlig"]
];

sub @StaffContext bar' @StaffContext by L bar.alt L;
sub @StaffContext bar' by L bar.alt;
sub bar' @StaffContext by bar.alt L;
2

here’s a repro and a test file.

  1. Open RCLT-Exact-Sequence-Test.glyphs.

  2. Create an edit tab (Command-T).

  3. Paste this glyph-name string into the tab:

    /L_one_two_b_b_o.rlig/bar

    There must be exactly two adjacent glyphs: L_one_two_b_b_o.rlig followed by bar, with no space glyph between them. Paste the string; typing it character by character does not insert the same glyph sequence.

  4. Display the bottom preview pane and select the Regular instance.

  5. Open Features at the bottom left and select rclt — Required Contextual Alternates.

The preview displayed both glyphs before enabling rclt; the application quit immediately after selecting rclt. The computer-use interface reported “App quit.” No other font document was open during this test.

RCLT-Exact-Sequence-Test.glyphs (4.3 KB)

3

Thanks for the test file. I fixed it.

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