Clarify what "cat" documentation means by "blank" lines.

* doc/coreutils.texi (cat invocation): "Blank" lines actually mean
empty lines.
* src/cat.c (usage): Say that "nonblank" means nonempty.  Clarify
--squeeze-blank.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/cat.c b/src/cat.c
index e100a1483..a9580e828 100644
--- a/src/cat.c
+++ b/src/cat.c
@@ -100,11 +100,11 @@ Usage: %s [OPTION] [FILE]...\n\
 Concatenate FILE(s), or standard input, to standard output.\n\
 \n\
   -A, --show-all           equivalent to -vET\n\
-  -b, --number-nonblank    number nonblank output lines\n\
+  -b, --number-nonblank    number nonempty output lines\n\
   -e                       equivalent to -vE\n\
   -E, --show-ends          display $ at end of each line\n\
   -n, --number             number all output lines\n\
-  -s, --squeeze-blank      never more than one single blank line\n\
+  -s, --squeeze-blank      suppress repeated empty output lines\n\
 "), stdout);
       fputs (_("\
   -t                       equivalent to -vT\n\