Source: glibc Version: 2.24-12 Severity: minor Control: block 662629 by -1 Hi,
There is an issue on how glibc classifies the Unicode Mark-nonspacing category, that should be maybe [[:alpha:]] instead of [[:punct:]]. This was identified by the bug reported to grep: https://bugs.debian.org/662629 You can test it using the U+0301 acute accent: $ echo árbol | grep -o '[[:alpha:]]*' a rbol This is also the opinion by grep's upstream about it: "Surely this is a glibc bug, not a grep bug. Grep is just following the character classification of glibc. I can reproduce the problem by compiling and running the attached program, which uses only glibc (not grep). This program exits with status 1, whereas you want it to exit with status 0. So I suggest filing a glibc bug report." combining.c is attached to this mail. Cheers, -- Santiago