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Diffstat (limited to 'Build/source/texk/web2c/pdftexdir/writettf.c')
-rw-r--r--Build/source/texk/web2c/pdftexdir/writettf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Build/source/texk/web2c/pdftexdir/writettf.c b/Build/source/texk/web2c/pdftexdir/writettf.c
index 0ec53a9a210..ab68813a3c9 100644
--- a/Build/source/texk/web2c/pdftexdir/writettf.c
+++ b/Build/source/texk/web2c/pdftexdir/writettf.c
@@ -328,7 +328,7 @@ static char *strip_spaces_and_delims(char *s, int l)
for (i = 0; i < l; s++, i++) {
if (*s == '(' || *s == ')' || *s == '<' || *s == '>' ||
*s == '[' || *s == ']' || *s == '{' || *s == '}' ||
- *s == '/' || *s == '%' || isspace(*s))
+ *s == '/' || *s == '%' || isspace((unsigned char)*s))
continue;
*p++ = *s;
}