Minor fixups

Clean up the help text.
Clarify a comment.

Author: studog-github

git-filter-repo

@@ -2032,7 +2032,7 @@ EXAMPLES
     contents.add_argument('--blobbase', metavar='BLOB-SHAS-AND-PATHS',
         help=_("Process an annotated blob-shas-and-paths.txt file. 'blobbase' "
                "because it uses a command system similar to git's interactive "
-               "rebase. Commands: k, keep <sha> = keep blob; s, strip <sha> = "
+               "rebase. Commands: k, keep sha = keep blob; s, strip sha = "
                "strip blob. Keep is the default if no command has been "
                "specified."))
 
@@ -2454,9 +2454,11 @@ EXAMPLES
     if args.blobbase:
       # Commands: k, keep = keep blob; s, strip = strip blob. No command means keep.
       with open(args.blobbase, 'br') as f:
-        # Header lines start with "===" or "Format:"
-        # Blank lines are blank, comments start with "#"
-        # Not annotating a blob is interpreted as "keep", keep is keep
+        # Header lines start with '===' or 'Format:'
+        # Blank lines are blank, comments start with '#'
+        # Not annotating a blob is interpreted as 'keep', keep is keep
+        # Pathbase match lines start with 'm'. This means one blob_shas_and_paths can be annotated for use with both
+        # blobbase and pathbase.
         # All this has to do is find the strip lines which are distinct from the above lines
         # git.git:sequencer.c:parse_insn_line() does not require the command to be in the first column
         args.strip_blobs_with_ids.update(parts[1] for parts in (line.split() for line in f) if len(parts) >= 2 and parts[0].decode()[0:1] == 's')