seq: Fix equal width calculation when '.' added to last number

Issue reported by Samuel Hapák.
<http://lists.gnu.org/archive/html/bug-coreutils/2009-02/msg00139.html>

* src/seq.c: Account for '.' added to "last" number.
* tests/misc/seq: Add corresponding test.
* NEWS: Mention the fix.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/seq.c b/src/seq.c
index 5f9da963b..ecc72f082 100644
--- a/src/seq.c
+++ b/src/seq.c
@@ -317,6 +317,8 @@ get_default_format (operand first, operand step, operand last)
 	  size_t last_width = last.width + (prec - last.precision);
 	  if (last.precision && prec == 0)
 	    last_width--;  /* don't include space for '.' */
+	  if (last.precision == 0 && prec)
+	    last_width++;  /* include space for '.' */
 	  size_t width = MAX (first_width, last_width);
 	  if (width <= INT_MAX)
 	    {