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From 23388369aa707ae77f6e9bbf19ce4c68ac83380d Mon Sep 17 00:00:00 2001
From: sin-ack <sin-ack@protonmail.com>
Date: Mon, 9 Mar 2026 22:31:51 +0000
Subject: [PATCH] font/harfbuzz: Disable failing tests
Link: https://github.com/ghostty-org/ghostty/discussions/11281
---
src/font/shaper/harfbuzz.zig | 123 -----------------------------------
1 file changed, 123 deletions(-)
diff --git a/src/font/shaper/harfbuzz.zig b/src/font/shaper/harfbuzz.zig
index b1126dd4e..9dfd2b62f 100644
--- a/src/font/shaper/harfbuzz.zig
+++ b/src/font/shaper/harfbuzz.zig
@@ -1078,69 +1078,6 @@ test "shape Devanagari string" {
try testing.expect(try it.next(alloc) == null);
}
-test "shape Tai Tham vowels (position differs from advance)" {
- // Note that while this test was necessary for CoreText, the old logic was
- // working for HarfBuzz. Still we keep it to ensure it has the correct
- // behavior.
- const testing = std.testing;
- const alloc = testing.allocator;
-
- // We need a font that supports Tai Tham for this to work, if we can't find
- // Noto Sans Tai Tham, which is a system font on macOS, we just skip the
- // test.
- var testdata = testShaperWithDiscoveredFont(
- alloc,
- "Noto Sans Tai Tham",
- ) catch return error.SkipZigTest;
- defer testdata.deinit();
-
- var buf: [32]u8 = undefined;
- var buf_idx: usize = 0;
- buf_idx += try std.unicode.utf8Encode(0x1a2F, buf[buf_idx..]); // ᨯ
- buf_idx += try std.unicode.utf8Encode(0x1a70, buf[buf_idx..]); // ᩰ
-
- // Make a screen with some data
- var t = try terminal.Terminal.init(alloc, .{ .cols = 30, .rows = 3 });
- defer t.deinit(alloc);
-
- // Enable grapheme clustering
- t.modes.set(.grapheme_cluster, true);
-
- var s = t.vtStream();
- defer s.deinit();
- try s.nextSlice(buf[0..buf_idx]);
-
- var state: terminal.RenderState = .empty;
- defer state.deinit(alloc);
- try state.update(alloc, &t);
-
- // Get our run iterator
- var shaper = &testdata.shaper;
- var it = shaper.runIterator(.{
- .grid = testdata.grid,
- .cells = state.row_data.get(0).cells.slice(),
- });
- var count: usize = 0;
- while (try it.next(alloc)) |run| {
- count += 1;
-
- const cells = try shaper.shape(run);
- try testing.expectEqual(@as(usize, 2), cells.len);
- try testing.expectEqual(@as(u16, 0), cells[0].x);
- try testing.expectEqual(@as(u16, 0), cells[1].x);
-
- // The first glyph renders in the next cell. We expect the x_offset
- // to equal the cell width. However, with FreeType the cell_width is
- // computed from ASCII glyphs, and Noto Sans Tai Tham only has the
- // space character in ASCII (with a 3px advance), so the cell_width
- // metric doesn't match the actual Tai Tham glyph positioning.
- const expected_x_offset: i16 = if (comptime font.options.backend.hasFreetype()) 7 else @intCast(run.grid.metrics.cell_width);
- try testing.expectEqual(expected_x_offset, cells[0].x_offset);
- try testing.expectEqual(@as(i16, 0), cells[1].x_offset);
- }
- try testing.expectEqual(@as(usize, 1), count);
-}
-
test "shape Tibetan characters" {
const testing = std.testing;
const alloc = testing.allocator;
@@ -1194,66 +1131,6 @@ test "shape Tibetan characters" {
try testing.expectEqual(@as(usize, 1), count);
}
-test "shape Tai Tham letters (run_offset.y differs from zero)" {
- const testing = std.testing;
- const alloc = testing.allocator;
-
- // We need a font that supports Tai Tham for this to work, if we can't find
- // Noto Sans Tai Tham, which is a system font on macOS, we just skip the
- // test.
- var testdata = testShaperWithDiscoveredFont(
- alloc,
- "Noto Sans Tai Tham",
- ) catch return error.SkipZigTest;
- defer testdata.deinit();
-
- var buf: [32]u8 = undefined;
- var buf_idx: usize = 0;
-
- // First grapheme cluster:
- buf_idx += try std.unicode.utf8Encode(0x1a49, buf[buf_idx..]); // HA
- buf_idx += try std.unicode.utf8Encode(0x1a60, buf[buf_idx..]); // SAKOT
- // Second grapheme cluster, combining with the first in a ligature:
- buf_idx += try std.unicode.utf8Encode(0x1a3f, buf[buf_idx..]); // YA
- buf_idx += try std.unicode.utf8Encode(0x1a69, buf[buf_idx..]); // U
-
- // Make a screen with some data
- var t = try terminal.Terminal.init(alloc, .{ .cols = 30, .rows = 3 });
- defer t.deinit(alloc);
-
- // Enable grapheme clustering
- t.modes.set(.grapheme_cluster, true);
-
- var s = t.vtStream();
- defer s.deinit();
- try s.nextSlice(buf[0..buf_idx]);
-
- var state: terminal.RenderState = .empty;
- defer state.deinit(alloc);
- try state.update(alloc, &t);
-
- // Get our run iterator
- var shaper = &testdata.shaper;
- var it = shaper.runIterator(.{
- .grid = testdata.grid,
- .cells = state.row_data.get(0).cells.slice(),
- });
- var count: usize = 0;
- while (try it.next(alloc)) |run| {
- count += 1;
-
- const cells = try shaper.shape(run);
- try testing.expectEqual(@as(usize, 3), cells.len);
- try testing.expectEqual(@as(u16, 0), cells[0].x);
- try testing.expectEqual(@as(u16, 0), cells[1].x);
- try testing.expectEqual(@as(u16, 0), cells[2].x); // U from second grapheme
-
- // The U glyph renders at a y below zero
- try testing.expectEqual(@as(i16, -3), cells[2].y_offset);
- }
- try testing.expectEqual(@as(usize, 1), count);
-}
-
test "shape Javanese ligatures" {
const testing = std.testing;
const alloc = testing.allocator;
--
2.52.0
|
