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refactor: shared Unicode display-width utility with grapheme cluster support

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Consolidate two inconsistent codepoint_width implementations from
Screen.cpp and EventEditor.cpp into nocal/tui/unicode.hpp. The unified
table covers all CJK, Hangul, emoji, symbol, and combining mark ranges.
display_width and fit_text handle grapheme clusters (ZWJ sequences,
skin-tone/hair modifiers, regional indicator pairs, variation selectors)
so calendar text with emoji or East Asian characters renders correctly.
This commit is contained in:
Bernardo Magri
2026-07-23 18:03:33 +01:00
parent 673a2c66c9
commit a159933baa
6 changed files with 571 additions and 182 deletions
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9
meson.build
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@@ -39,6 +39,7 @@ nocal_sources = files(
'src/tui/EventEditor.cpp',
'src/tui/Terminal.cpp',
'src/tui/TuiApp.cpp',
'src/tui/unicode.cpp',
)
nocal_lib = static_library('nocal-core', nocal_sources, include_directories: inc,
dependencies: [sqlite, libcrypto, libcurl, libsecret, nlohmann_json])
@@ -105,10 +106,14 @@ test('tui', tui_tests)
tui_focus_tests = executable('tui-focus-tests', 'tests/tui_focus_tests.cpp',
dependencies: nocal_dep)
test('tui-focus', tui_focus_tests)
editor_tests = executable('editor-tests', 'tests/editor_tests.cpp',
dependencies: nocal_dep)
editor_tests = executable('editor-tests',
'tests/editor_tests.cpp', dependencies: nocal_dep)
test('editor', editor_tests)
unicode_tests = executable('unicode-tests',
'tests/unicode_tests.cpp', dependencies: nocal_dep)
test('nocal:unicode', unicode_tests)
test('cli-recovery', shell,
args: [files('tests/cli_recovery_test.sh'), nocal_executable])
test('cli-transfer', shell,