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docs: clarify CJK font fallback comment with environment-dependent behavior

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The fallback issue is caused by CTFontCollection scoring prioritizing
monospace fonts, not just CTFontCreateForString. The selected decorative
font varies by environment (e.g. AB_appare from Adobe CC, or LingWai).
This commit is contained in:
atani 2026-03-08 23:03:38 +09:00
parent 7236ba8d8a
commit cee109bab0
1 changed files with 6 additions and 3 deletions
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9
Sources/GhosttyTerminalView.swift
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@ -1005,9 +1005,12 @@ class GhosttyApp {
}
/// When the user has not configured `font-codepoint-map` for CJK ranges,
/// macOS Core Text may pick an inappropriate fallback font (e.g. LingWai,
/// a decorative calligraphic font) for CJK characters. This injects a
/// sensible default based on the system's preferred languages.
/// Ghostty's `CTFontCollection` scoring may pick an inappropriate fallback
/// font for Hiragana, Katakana, and CJK symbols. The scoring prioritizes
/// monospace fonts, so decorative fonts with monospace attributes (e.g.
/// AB_appare from Adobe CC, or LingWai) can be selected depending on what
/// is installed. This injects a sensible default based on the system's
/// preferred languages.
///
/// See: https://github.com/manaflow-ai/cmux/pull/1017
private func loadCJKFontFallbackIfNeeded(_ config: ghostty_config_t) {