GNU bug report logs - #69369
wc -w ignores breaking space over UCHAR_MAX

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Aearil <aearil <at> paranoici.org>
To: bug-coreutils <at> gnu.org
Subject: wc -w ignores breaking space over UCHAR_MAX
Date: Sat, 24 Feb 2024 21:44:24 +0100

Hi,

wc -w doesn't seem to recognize whitespace characters with a codepoint
over UCHAR_MAX (255) as word separators. For example, using the
character EM SPACE U+2003:

$ printf "foo\u2003bar" | ./wc -w
1

I should get a word count of 2, but instead the space is ignored while
counting words. Meanwhile, wc v9.4 gives the correct answer:

$ printf "foo\u2003bar" | wc -w
2

It looks like the regression has been introduced by [f40c6b5] and
would be fixed by something like the following change:

diff --git a/src/wc.c b/src/wc.c
index f5a921534..9d456f8c0 100644
--- a/src/wc.c
+++ b/src/wc.c
@@ -528,7 +528,7 @@ wc (int fd, char const *file_x, struct fstatus *fstatus, off_t current_pos)
                           if (width > 0)
                             linepos += width;
                         }
-                      in_word2 = !iswnbspace (wide_char);
+                      in_word2 = !iswspace (wide_char) && !iswnbspace (wide_char);
                     }

                   /* Count words by counting word starts, i.e., each


Cheers,

--
Aearil

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