[PATCH] doc: ls: clarify description of timestamps

[Pádraig Brady]

* src/ls.c (usage): Don't mention "modification" in the
description of ctime (-c), as it's confusing with mtime.
* doc/coreutils.texi (ls invocation): State that --time=creation
falls back to using mtime where not available.
---
 doc/coreutils.texi | 3 ++-
 src/ls.c           | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index 71ccc64ed..35f90d417 100644
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -8031,7 +8031,8 @@ sort according to the atime.
 @opindex --time
 @opindex birth time@r{, printing or sorting files by}
 @opindex creation timestamp@r{, printing or sorting files by}
-In long format, print the file creation timestamp if available.
+In long format, print the file creation timestamp if available,
+falling back to the file modification timestamp (mtime) if not.
 When sorting by time or when not using long format,
 sort according to the birth time.
 @xref{File timestamps}.
diff --git a/src/ls.c b/src/ls.c
index d48892be7..2c9a58398 100644
--- a/src/ls.c
+++ b/src/ls.c
@@ -5423,7 +5423,7 @@ Sort entries alphabetically if none of -cftuvSUX nor 
--sort is specified.\n\
 "), stdout);
       fputs (_("\
   -c                         with -lt: sort by, and show, ctime (time of 
last\n\
-                             modification of file status information);\n\
+                             change of file status information);\n\
                              with -l: show ctime and sort by name;\n\
                              otherwise: sort by ctime, newest first\n\
 \n\
-- 
2.26.2