maint: dfa: improve comments

* src/dfa.c (match_mb_charset, match_anychar): Improve comments.

1 files changed, 7 insertions, 10 deletions

diff --git a/src/dfa.c b/src/dfa.c
index a0d644fb..5b5ed93d 100644
--- a/src/dfa.c
+++ b/src/dfa.c
@@ -2863,11 +2863,9 @@ transit_state_singlebyte (struct dfa *d, int s, unsigned char const *p,
   return rval;
 }
 
-/* Check whether period can match or not in the current context.  If it can,
-   return the amount of the bytes with which period can match, otherwise
-   return 0.
-   `pos' is the position of the period.  `idx' is the index from the
-   buf_begin, and it is the current position in the buffer.  */
+/* Match a "." against the current context.  buf_begin[IDX] is the
+   current position.  Return the length of the match, in bytes.
+   POS is the position of the ".".  */
 static int
 match_anychar (struct dfa *d, int s, position pos, int idx)
 {
@@ -2903,11 +2901,10 @@ match_anychar (struct dfa *d, int s, position pos, int idx)
   return mbclen;
 }
 
-/* Check whether bracket expression can match or not in the current context.
-   If it can, return the amount of the bytes with which expression can match,
-   otherwise return 0.
-   `pos' is the position of the bracket expression.  `idx' is the index
-   from the buf_begin, and it is the current position in the buffer.  */
+/* Match a bracket expression against the current context.
+   buf_begin[IDX] is the current position.
+   Return the length of the match, in bytes.
+   POS is the position of the bracket expression.  */
 static int
 match_mb_charset (struct dfa *d, int s, position pos, int idx)
 {