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bug#23292: 24.5; Combining characters do not reliably combine


From: Alexis
Subject: bug#23292: 24.5; Combining characters do not reliably combine
Date: Fri, 15 Apr 2016 21:52:51 +1000
User-agent: mu4e 0.9.16; emacs 24.5.3


Eli Zaretskii <address@hidden> writes:

Can you show a screenshot?

Attached.

Something with your fonts and fontsets, I guess. If you force Emacs to use Inconsolata-g for "̷", does the composition happen?

Hmm, i'm having some difficulty doing this. i start GUI Emacs from an X terminal via 'emacs -Q'. i then go to the Options menu, select "Set Default Font", and choose "InconsolataG Medium"[1]. In *scratch*, i type 'o', and confirm with `describe-char' that "InconsolataG" is the font used for that character.

i then evaluate:

(set-fontset-font "fontset-default" '(#x0337 . #x0337) "InconsolataG")

with C-x C-e, which returns nil. If i then move point immediately after the previously-typed 'o', and type C-x 8 RET 337, the '/' is displayed visually separate from the 'o'. But using `describe-char' on it says that Gentium is the font used.

i gather something i'm doing something wrong here, i'm guessing in the ELisp .... ?

[1] "InconsolataG" is "Inconsolata-g" renamed by me locally, via FontForge, so as to be XLFD-friendly.

Attachment: dejavu_sans_mono_book.png
Description: PNG image


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