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po4a/update-po: Workaround an issue with non-ASCII chars in tables

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Non-ASCII chars in tables (.TS ... .TE) result in warnings:

    man --warnings po4a/man/uk/xz.1 > /dev/null
    troff:<standard input>:464: warning: special character 'u0411\[tbl' not defined
    troff:<standard input>:1157: warning: special character 'u044\[tbl' not defined
    troff:<standard input>:1682: warning: special character 'u0434\[tbl' not defined

po4a generates groff Unicode escapes like '\u0435' followed immediately
by '[' in table contexts, causing groff to interpret the full string
'u0435[tbl' as a single special character name. Fix this by inserting
a dummy character (\&) after every Unicode escape so that the bracket
is treated as literal text instead of part of the character name.

Co-authored-by: Otto Kekäläinen <otto@debian.org>
Partially-fixes: https://github.com/tukaani-project/xz/pull/220
This commit is contained in:
Lasse Collin 2026-05-20 01:25:41 +03:00
parent bc96573a65
commit 814e8828b5
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1 changed files with 6 additions and 0 deletions
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@ -84,6 +84,12 @@ po4a --force --verbose \
# This way they won't get included in distribution tarballs.
rm -f -- *.po.authors
# Non-ASCII characters in table data can cause groff to merge UTF-8 escapes
# with internal table markup like [tbl], creating invalid character names.
# Insert \& (a dummy character) after non-ASCII characters in table data
# rows to prevent this.
perl -i -CSD -pe 's/([^\x00-\x7F])/\1\\&/g if /^\.TS/ .. /^\.TE/' man/*/*.1
# Add the customized POT header which contains the SPDX license
# identifier and spells out the license name instead of saying
# "the same license as the XZ Utils package".