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Benno Schulenberg f757c4a512 syntaxes: colorize hex more strictly by using character class [:xdigit:]
In UTF-8 locales, the ranges A-F and a-f include several accented
characters beyond "ABCDEF" and "abcdef", such as the Croat č and ć.

This fixes https://savannah.gnu.org/bugs/?61487.

Bug existed since the beginning of each of the syntaxes,
for the C syntax since version 1.3.6, commit 159bdfdc.
2021-11-15 16:17:31 +01:00
..