This is a problem even at the desktop level. With the gnome desktop font set to the default 'Ubuntu 11' if I use an app (gImageReader in my case, see also https://github.com/manisandro/gImageReader/issues/613) to write certain decomposed characters (e.g. \u0069\u0300), they are not properly combined on the screen. This is a bad user experience. I've switched to 'DejaVu Sans 11' as a workaround, as it seems to handle everything correctly so far. However, the related DejaVu Sans Mono Book still messes this up (e.g. in gnome-terminal and gedit), but on different combined characters. So for monospace needs I've found FreeMono to cover the most ground (pkg: fonts-freefont-ttf). Try this, while switching between the default gnome-terminal font (Ubuntu Mono?) and DejaVu Sans Mono Book:
$ echo -e '\u0069\u0300\u0020\u0254\u0327' ì ɔ̧ The ì renders correctly while the open o + cedilla doesn't, both here and with the terminal font set to DejaVu Sans Mono Book, but if you switch to the default font in the terminal the open o + cedilla renders correctly while the ì renders with both the dot and the grave accent on top of each other, rather than the dot disappearing like it should. I would guess that the related font definitions (Ubuntu Regular/Mono, DejaVu Sans Mono, possibly others) are simply incomplete when it comes to these less common character combinations. font-manager has been very helpful for side-by-side comparisons of sample text in multiple fonts. ** Bug watch added: github.com/manisandro/gImageReader/issues #613 https://github.com/manisandro/gImageReader/issues/613 -- You received this bug notification because you are a member of Ubuntu Studio Bugs, which is subscribed to fonts-droid in Ubuntu. Matching subscriptions: Ubuntu Studio Bugs, Ubuntu Studio Bugs, Ubuntu Studio Bugs https://bugs.launchpad.net/bugs/299158 Title: DejaVu, Liberation Mono, Noto Mono, Tlwg Mono, Oxygen Mono, Bitstream Vera Mono: Combining diacritics out of place Status in fonts-dejavu package in Ubuntu: Confirmed Status in fonts-droid package in Ubuntu: Won't Fix Status in fonts-hack package in Ubuntu: Incomplete Status in fonts-liberation package in Ubuntu: Confirmed Status in fonts-noto package in Ubuntu: Confirmed Status in fonts-tlwg package in Ubuntu: Confirmed Status in fonts-ubuntu package in Ubuntu: Confirmed Status in msttcorefonts package in Ubuntu: Won't Fix Status in oxygen-fonts package in Ubuntu: Confirmed Status in ttf-bitstream-vera package in Ubuntu: Won't Fix Bug description: In the Liberation Mono font, combining diacritical marks are drawn over the following character rather than the preceding. According to the Unicode standard since at least version 3.0, chapter 3.6, verse D56, combining characters apply to the preceding base character. However, this font renders them on the following base character. Version info: Ubuntu Intrepid ttf-liberation 1.04~beta2-2 To reproduce: 1. Open gedit. 2. Type the following three code points: U+0061 U+0301 U+0065 (Latin small letter a, Combining acute accent, Latin small letter e). 3. Via Edit|Preferences|Font & Colors|Font, select the Liberation Mono font. Expected: * Two grapheme clusters are displayed: Latin small letter a with acute accent, Latin small letter e. Observed: * The grapheme clusters displayed are: Latin small letter a, Latin small letter e with acute accent. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fonts-dejavu/+bug/299158/+subscriptions -- Mailing list: https://launchpad.net/~ubuntustudio-bugs Post to : ubuntustudio-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntustudio-bugs More help : https://help.launchpad.net/ListHelp
