13980 – Unicode underline applied to the next character instead of the previous

Unicode underline applied to the next character instead of the previous

Status:

RESOLVED: WONTFIX

Priority:
Medium

Severity:
normal

Product:
Xfce4-terminal

Component:

General

Comments

Description Ashish Myles 2017-11-07 04:25:00 CET

I'm using the U+0332 COMBINING LOW LINE character on the terminal:
https://codepoints.net/U+0332?lang=en
Per https://en.wikipedia.org/wiki/Combining_character, "In Unicode, diacritics are always added after the main character..."
This can also be confirmed by looking at

<!DOCTYPE html>
<meta charset="UTF-8">
<span style="font-family:Courier;">.&#x0332;.&#x0332;.</span>

in your favorite unicode-compliant browser.

However, echoing to xfce-terminal using this character incorrectly puts an underline on the character after instead of the character before:
$ echo ".\xCC\xB2.\xCC\xB2."

Comment 1 Egmont Koblinger 2017-11-07 14:28:13 CET

Please see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=854149.

Comment 2 Igor editbugs

2017-11-07 14:34:03 CET

Egmont, thanks for the link!

Ashish, thanks for the report. Unfortunately, there's nothing I can do in the terminal app as font rendering is done within vte, as Egmont pointed out.
I'm closing this bug as WONTFIX.

Comment 3 Egmont Koblinger 2017-11-07 14:38:36 CET

Ashish, as per the linked bug, my recommendation as a workaround is to pick another font where this issue doesn't occur, such as e.g. FreeMono Regular, Noto Mono Regular, Tlwg Mono Regular, Ubuntu Mono Regular.

Comment 4 Igor editbugs

2017-11-07 14:44:32 CET

The Hack font that I'm using also seems to handle this case correctly.

Comment 5 Ashish Myles 2017-11-08 02:46:16 CET

Thanks for the quick response! My distribution didn't actually didn't have any of those, but it did have Google Roboto Mono Regular which works correctly with this.

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Bug #13980

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