Created attachment 140765 [details] Kitty text display SUMMARY Horizontal spacing between characters is uneven, and characters also overlap the following ones. STEPS TO REPRODUCE 1. Paste this text into some Konsole view (e.g. using Neovim or other console editor): "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣀⣀⣀⣀⣀⣀⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀", "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⣤⣶⣾⠿⠿⠟⠛⠛⠛⠛⠿⠿⣿⣷⣤⣄⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀", " ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣠⣾⡿⠋⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠙⠿⣷⣤⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀", "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣤⡿⠛⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠛⢿⣦⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀", "⠀⠀⠀⠀⠀⠀⠀⠀⠀⡠⠒⠂⠉⠉⠉⠉⢩⣿⡿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠹⣷⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀", "⠀⠀⠀⠀⠀⠀⠀⠀⠸⡀⠀⠀⠀⠀⠀⢰⣿⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⣿⣧⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀", "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠑⠠⡀⠀⠀⢀⣾⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⣿⡆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀", "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠢⢀⣸⡟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⣇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀", "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⡧⢄⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀", "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⡇⠀⠈⠁⠒⠤⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣿⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀", "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣇⠀⠀⠀⠀⠀⠀⠉⠢⠤⠀⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣸⡟⠈⠑⠄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀", "⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢿⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠑⠒⠤⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⣿⡇⠀⠀⢀⣣⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀", "⠀⣿⡟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠸⣷⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠀⠀⠒⠢⠤⠄⣀⣀⠀⠀⠀⢠⣿⡟⠀⠀⠀⣺⣿⡿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀", "⠀⣿⠇⠀⠀⠀⠀⠀⣤⡄⠀⠀⢠⣤⡄⠀⢨⣭⣠⣤⣤⣤⡀⠀⠀⢀⣤⣤⣤⣤⡄⠀⠀⠀⣤⣄⣤⣤⣤⠀⠀⣿⣯⠉⠉⣿⡟⠀⠈⢩⣭⣤⣤⠀⠀⠀⠀⣠⣤⣤⣤⣄⣤⣤", "⢠⣿⠀⠀⠀⠀⠀⠀⣿⠃⠀⠀⣸⣿⠁⠀⣿⣿⠉⠀⠈⣿⡇⠀⠀⠛⠋⠀⠀⢹⣿⠀⠀⠀⣿⠏⠀⠸⠿⠃⠀⣿⣿⠀⣰⡟⠀⠀⠀⠀⠀⢸⣿⠀⠀⠀⠀⣿⡟⢸⣿⡇⢀⣿", "⣸⡇⠀⠀⠀⠀⠀⢸⣿⠀⠀⠀⣿⡟⠀⢠⣿⡇⠀⠀⢰⣿⡇⠀⣰⣾⠟⠛⠛⣻⡇⠀⠀⢸⡿⠀⠀⠀⠀⠀⠀⢻⣿⢰⣿⠀⠀⠀⠀⠀⠀⣾⡇⠀⠀⠀⢸⣿⠇⢸⣿⠀⢸⡏", "⣿⣧⣤⣤⣤⡄⠀⠘⣿⣤⣤⡤⣿⠇⠀⢸⣿⠁⠀⠀⣼⣿⠀⠀⢿⣿⣤⣤⠔⣿⠃⠀⠀⣾⡇⠀⠀⠀⠀⠀⠀⢸⣿⣿⠋⠀⠀⠀⢠⣤⣤⣿⣥⣤⡄⠀⣼⣿⠀⣸⡏⠀⣿⠃", "⠉⠉⠉⠉⠉⠁⠀⠀⠈⠉⠉⠀⠉⠀⠀⠈⠉⠀⠀⠀⠉⠉⠀⠀⠀⠉⠉⠁⠈⠉⠀⠀⠀⠉⠀⠀⠀⠀⠀⠀⠀⠈⠉⠉⠀⠀⠀⠀⠈⠉⠉⠉⠉⠉⠁⠀⠉⠁⠀⠉⠁⠀⠉⠀", OBSERVED RESULT Horizontal spacing between characters is irregular and the "m" letter is truncated. (See screenshot) EXPECTED RESULT The "m" is not truncated and spacing between dots are even. (See Kitty terminal emulator screenshot) SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.22.4 KDE Frameworks Version: 5.85.0 Qt Version: 5.15.2 Kernel Version: 5.10.56-1-lts (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-8550U CPU @ 1.80GHz Memory: 15,5 GiB of RAM Graphics Processor: Mesa Intel® UHD Graphics 620 ADDITIONAL INFORMATION I use fractional scaling (125%), which is respected by both Kitty and Konsole.
Created attachment 140766 [details] Alacritty text display
Created attachment 140767 [details] Konsole text display
A possibly relevant merge request was started @ https://invent.kde.org/utilities/konsole/-/merge_requests/722
Git commit 76f879cd70fb494ab2334d2660b34679546f3d9d by Kurt Hindenburg, on behalf of Matan Ziv-Av. Committed on 26/08/2022 at 19:24. Pushed by hindenburg into branch 'master'. Draw characters in exact positions QT can't be made to draw monospaced text (if the font does not cooperate), so avoid combining characters, using a QPainter::drawText() call for each character. For bidi text support this change requires konsole to reorder and reshape the characters. This is done using the ICU library (which QT also uses). This change allows for some improvements related to text rendering: - More precise bidi reordering, which is no longer changed by characters' attributes and selection. - underlines drawn separately from the text, allowing for differing underline modes (double, curly, dashed, dotted, colored). - Overriding font for emoji characters. This commit fixes a few bugs and addresses a lot more: Feature requests: More standard conforming RTL and various underlines: Related: bug 403729, bug 387811, bug 416508, bug 452087, bug 425973, bug 430822, bug 442742, bug 430822, bug 440070, bug 450017, bug 445846, bug 453086, bug 381593, bug 451716 Using non-monospace font: Emoji: Regression: devanagari rendering M +2 -0 CMakeLists.txt M +1 -0 src/CMakeLists.txt M +47 -25 src/FontDialog.cpp M +2 -1 src/FontDialog.h M +127 -23 src/Screen.cpp M +18 -5 src/Screen.h M +28 -13 src/Vt102Emulation.cpp M +0 -29 src/autotests/CharacterTest.cpp M +0 -1 src/autotests/CharacterTest.h M +1 -1 src/autotests/TerminalCharacterDecoderTest.cpp M +119 -29 src/characters/Character.h M +1 -1 src/characters/Hangul.cpp M +5 -4 src/decoders/HTMLDecoder.cpp M +1 -1 src/decoders/PlainTextDecoder.cpp M +3 -0 src/profile/Profile.cpp M +29 -0 src/profile/Profile.h M +101 -6 src/terminalDisplay/TerminalDisplay.cpp M +7 -0 src/terminalDisplay/TerminalDisplay.h M +42 -0 src/terminalDisplay/TerminalFonts.cpp M +12 -0 src/terminalDisplay/TerminalFonts.h M +542 -269 src/terminalDisplay/TerminalPainter.cpp M +40 -13 src/terminalDisplay/TerminalPainter.h M +2 -0 src/widgets/EditProfileAdvancedPage.ui M +113 -3 src/widgets/EditProfileAppearancePage.ui M +61 -3 src/widgets/EditProfileDialog.cpp M +6 -1 src/widgets/EditProfileDialog.h https://invent.kde.org/utilities/konsole/commit/76f879cd70fb494ab2334d2660b34679546f3d9d