https://bz.apache.org/bugzilla/show_bug.cgi?id=70101
Bug ID: 70101
Summary: East Asian UTF-8 is three bytes long, but two columns
wide
Product: Apache httpd-2
Version: 2.4.52
Hardware: All
OS: All
Status: NEW
Severity: trivial
Priority: P2
Component: mod_autoindex
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
In .htaccess, using
IndexOptions Charset=UTF-8 NameWidth=*
reveals one problem. Apache 2.4 is not correctly counting spaces needed when
encountering UTF-8 characters:
Index of /B
Name Last modified Size
Description
Parent Directory -
積丹尼-路號門牌弧形網-(全文).docx 2026-05-27 07:14 1.5M
youshi.docx 2026-05-05 10:05 1.5M
YouTube_playlists.html 2025-11-05 02:31 89K
dan02.aqx 2025-06-27 19:18 3.8K
We see Apache has overcompensated. I bet it sees the UTF-8 as just three
bytes, when that is not what needs to be counted. Apache needs to use e.g.,
https://pandoc.org/lua-filters.html : real_length (str): Returns the
real length of a string in a monospace font: 0 for a combining
character, 1 for a regular character, 2 for an East Asian wide
character.
Else the columns get out of line.
Unix ls(1) avoids this problem by always printing the filename last.
See also https://httpd.apache.org/docs/current/mod/mod_autoindex.html
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