seq -0.1 0.1 2: print final number when locale's decimal point is ","

* src/seq.c (print_numbers): Use strtold, not c_strtold to convert
from just-formatted-using-asprintf string back to double, since
asprintf may have used something other than "." as the decimal point.
Reported by lsof@nodata.co.uk as <http://bugzilla.redhat.com/463556>.
Thanks to Ondřej Vašík for discovering that the bug was locale-related.

    $ LC_ALL=cs_CZ.UTF-8 seq -0.1 0.1 2|grep 2.0
    [Exit 1]
    $ seq -0.1 0.1 2|grep 2.0
    2.0

* tests/check.mk (TESTS_ENVIRONMENT): Add LOCALE_FR_UTF8, for...
* tests/misc/seq [locale-dec-pt]: New test for the above.
* NEWS (bug fix): Mention it.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/seq.c b/src/seq.c
index 55518dfab..b5f0651d1 100644
--- a/src/seq.c
+++ b/src/seq.c
@@ -306,7 +306,7 @@ print_numbers (char const *fmt, struct layout layout,
 		xalloc_die ();
 	      x_str[x_strlen - layout.suffix_len] = '\0';
 
-	      if (xstrtold (x_str + layout.prefix_len, NULL, &x_val, c_strtold)
+	      if (xstrtold (x_str + layout.prefix_len, NULL, &x_val, strtold)
 		  && abs_rel_diff (x_val, last) < DBL_EPSILON)
 		{
 		  char *x0_str = NULL;