regcomp.c: Clean up comment

diff --git a/regcomp.c b/regcomp.c
index 7dcd20e..1bcfc68 100644 (file)
--- a/regcomp.c
+++ b/regcomp.c
@@ -11086,19 +11086,21 @@ parseit:
        SvREFCNT_dec(unicode_alternate);
     }
     else {
-
+       /* av[0] stores the character class description in its textual form:
+        *       used later (regexec.c:Perl_regclass_swash()) to initialize the
+        *       appropriate swash, and is also useful for dumping the regnode.
+        * av[1] if NULL, is a placeholder to later contain the swash computed
+        *       from av[0].  But if no further computation need be done, the
+        *       swash is stored there now.
+        * av[2] stores the multicharacter foldings, used later in
+        *       regexec.c:S_reginclass().
+        * av[3] stores the nonbitmap inversion list for use in addition or
+        *       instead of av[0]; not used if av[1] isn't NULL
+        * av[4] is set if any component of the class is from a user-defined
+        *       property; not used if av[1] isn't NULL */
        AV * const av = newAV();
        SV *rv;
-       /* The 0th element stores the character class description
-        * in its textual form: used later (regexec.c:Perl_regclass_swash())
-        * to initialize the appropriate swash (which gets stored in
-        * element [1]), and also useful for dumping the regnode.
-        * Element [2] stores the multicharacter foldings,
-        * used later (regexec.c:S_reginclass()).
-        * Element [3] stores the nonbitmap inversion list for use in addition
-        * or instead of element [0].
-        * Element [4] is set if any component of the class is from a
-        * user-defined property */
+
        av_store(av, 0, (SvCUR(listsv) == initial_listsv_len)
                        ? &PL_sv_undef
                        : listsv);