Comment changes.

1 files changed, 7 insertions, 3 deletions

diff --git a/src/dired.c b/src/dired.c
index cce03607de2..29027718da4 100644
--- a/src/dired.c
+++ b/src/dired.c
@@ -453,6 +453,8 @@ file_name_completion (file, dirname, all_flag, ver_flag)
                      use it as the best match rather than one that is not
                      an exact match.  This way, we get the case pattern
                      of the actual match.  */
+                  /* This tests that the current file is an exact match
+                     but BESTMATCH is not (it is too long).  */
                   if ((matchsize == len
                        && matchsize + !!directoryp 
                           < XSTRING (bestmatch)->size)
@@ -460,13 +462,15 @@ file_name_completion (file, dirname, all_flag, ver_flag)
                       /* If there is no exact match ignoring case,
                          prefer a match that does not change the case
                          of the input.  */
+                      /* If there is more than one exact match aside from
+                         case, and one of them is exact including case,
+                         prefer that one.  */
+                      /* This == checks that, of current file and BESTMATCH,
+                         either both or neither are exact.  */
                       (((matchsize == len)
                         ==
                         (matchsize + !!directoryp 
                          == XSTRING (bestmatch)->size))
-                       /* If there is more than one exact match aside from
-                          case, and one of them is exact including case,
-                          prefer that one.  */
                        && !bcmp (p2, XSTRING (file)->data, XSTRING (file)->size)
                        && bcmp (p1, XSTRING (file)->data, XSTRING (file)->size)))
                     {