> Both are narrow enough to fit in a single cell. This is utterly irrelevant. Again: The width is _never_ defined by the font (glyph).
> Having *any* characters show as double-cell width confuses readline horribly This is not true, readline perfectly handles double-wide characters, as long as readline's belief and the terminal emulator's actual behavior wrt. the width is the same. There are two things to note: - "Ambiguous width: wide" is not supposed to work correctly in apps incl. readline. This is because they treat these as narrow ones. There should be locale definitions that define them as wide, but there aren't. - In Yakkety, glib used Unicode 9.0 whereas glibc used Unicode 8.0. Plenty of characters became wide as of Unicode 9.0, incl. the '⚡' symbol. This led to faulty behavior e.g. in gnome-terminal. Xenial is fine (Unicode 8.0 in both components) and so is Zesty (Unicode 9.0). -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-terminal in Ubuntu. https://bugs.launchpad.net/bugs/1570533 Title: wrong character width with Ubuntu Mono and replacement fonts in gnome- terminal: Status in gnome-terminal package in Ubuntu: New Bug description: I'm using Ubuntu Mono in gnome-terminal. When displaying some unicode (non ascii) characters that are not in Ubuntu Mono and a fallback font is used, the spacing between the glyphs is wrong (too small). The fallback characters are double width, but the next character is display after a single width, leading into overlapping characters. If I see this correctly, gnome-terminal is using libvte which is using pango to render text. I therefore checked how pango renders this with `pango-view --font="Ubuntu Mono 32" --markup --text='<span fallback="true">xxxxxxxxxxxxxxxxxxxxxxxxx
A▷C✚D⚑F↓G↑H..I☺J</span>'` and `pango-view --font="Ubuntu Mono 32" --markup --text='<span fallback="true">xxxxxxxxxxxxxxxxxxxxxxxxx
A▷C✚D⚑F↓G↑H..I☺J</span>'` . In both cases double with characters or "replacement boxes" are displayed and no overlapping occurs. If I use the "monospace" font, no overlapping occurs in gnome- terminal. Whose fault is this and how can it be fixed? I'm on Ubuntu 14.04.4 LTS, gnome-terminal's version is 3.6.2-0ubuntu1, tf-ubuntu-font-family 0.80-0ubuntu6 and everything is up to date. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-terminal/+bug/1570533/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
