regex: assume RE_ENABLE_I18N

These days there is no longer any need to port to platforms
lacking iswctype etc., since Gnulib now has substitutes.
* config/srclist.txt: Comment out regex_internal.c and
regex_internal.h for now, since they no longer match glibc.
The intent is to merge them again soon.
* lib/regex_internal.h (RE_ENABLE_I18N): Remove.
All uses changed to assume that RE_ENABLE_I18N is 1.
* modules/regex (Depends-on): Add iswctype.

1 files changed, 14 insertions, 30 deletions

diff --git a/lib/regex_internal.h b/lib/regex_internal.h
index 1245e782ff..b1bc2ee62f 100644
--- a/lib/regex_internal.h
+++ b/lib/regex_internal.h
@@ -116,10 +116,6 @@
 # define gettext_noop(String) String
 #endif
 
-#if (defined MB_CUR_MAX && HAVE_WCTYPE_H && HAVE_ISWCTYPE) || _LIBC
-# define RE_ENABLE_I18N
-#endif
-
 /* Number of ASCII characters.  */
 #define ASCII_CHARS 0x80
 
@@ -246,10 +242,8 @@ typedef enum
   SIMPLE_BRACKET = 3,
   OP_BACK_REF = 4,
   OP_PERIOD = 5,
-#ifdef RE_ENABLE_I18N
   COMPLEX_BRACKET = 6,
   OP_UTF8_PERIOD = 7,
-#endif /* RE_ENABLE_I18N */
 
   /* We define EPSILON_BIT as a macro so that OP_OPEN_SUBEXP is used
      when the debugger shows values of this enum type.  */
@@ -287,30 +281,29 @@ typedef enum
 
 } re_token_type_t;
 
-#ifdef RE_ENABLE_I18N
 typedef struct
 {
   /* Multibyte characters.  */
   wchar_t *mbchars;
 
+#ifdef _LIBC
   /* Collating symbols.  */
-# ifdef _LIBC
   int32_t *coll_syms;
-# endif
+#endif
 
+#ifdef _LIBC
   /* Equivalence classes. */
-# ifdef _LIBC
   int32_t *equiv_classes;
-# endif
+#endif
 
   /* Range expressions. */
-# ifdef _LIBC
+#ifdef _LIBC
   uint32_t *range_starts;
   uint32_t *range_ends;
-# else /* not _LIBC */
+#else
   wchar_t *range_starts;
   wchar_t *range_ends;
-# endif /* not _LIBC */
+#endif
 
   /* Character classes. */
   wctype_t *char_classes;
@@ -333,7 +326,6 @@ typedef struct
   /* # of character classes. */
   Idx nchar_classes;
 } re_charset_t;
-#endif /* RE_ENABLE_I18N */
 
 typedef struct
 {
@@ -341,9 +333,7 @@ typedef struct
   {
     unsigned char c;		/* for CHARACTER */
     re_bitset_ptr_t sbcset;	/* for SIMPLE_BRACKET */
-#ifdef RE_ENABLE_I18N
     re_charset_t *mbcset;	/* for COMPLEX_BRACKET */
-#endif /* RE_ENABLE_I18N */
     Idx idx;			/* for BACK_REF */
     re_context_type ctx_type;	/* for ANCHOR */
   } opr;
@@ -355,12 +345,10 @@ typedef struct
   unsigned int constraint : 10;	/* context constraint */
   unsigned int duplicated : 1;
   unsigned int opt_subexp : 1;
-#ifdef RE_ENABLE_I18N
   unsigned int accept_mb : 1;
   /* These 2 bits can be moved into the union if needed (e.g. if running out
      of bits; move opr.c to opr.c.c and move the flags to opr.c.flags).  */
   unsigned int mb_partial : 1;
-#endif
   unsigned int word_char : 1;
 } re_token_t;
 
@@ -375,12 +363,10 @@ struct re_string_t
      REG_ICASE, upper cases of the string are stored, otherwise MBS points
      the same address that RAW_MBS points.  */
   unsigned char *mbs;
-#ifdef RE_ENABLE_I18N
   /* Store the wide character string which is corresponding to MBS.  */
   wint_t *wcs;
   Idx *offsets;
   mbstate_t cur_state;
-#endif
   /* Index in RAW_MBS.  Each character mbs[i] corresponds to
      raw_mbs[raw_mbs_idx + i].  */
   Idx raw_mbs_idx;
@@ -779,7 +765,6 @@ bitset_mask (bitset_t dest, const bitset_t src)
     dest[bitset_i] &= src[bitset_i];
 }
 
-#ifdef RE_ENABLE_I18N
 /* Functions for re_string.  */
 static int
 __attribute__ ((pure, unused))
@@ -803,15 +788,15 @@ re_string_wchar_at (const re_string_t *pstr, Idx idx)
   return (wint_t) pstr->wcs[idx];
 }
 
-# ifdef _LIBC
-#  include <locale/weight.h>
-# endif
+#ifdef _LIBC
+# include <locale/weight.h>
+#endif
 
 static int
 __attribute__ ((pure, unused))
 re_string_elem_size_at (const re_string_t *pstr, Idx idx)
 {
-# ifdef _LIBC
+#ifdef _LIBC
   const unsigned char *p, *extra;
   const int32_t *table, *indirect;
   uint_fast32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
@@ -827,11 +812,10 @@ re_string_elem_size_at (const re_string_t *pstr, Idx idx)
       findidx (table, indirect, extra, &p, pstr->len - idx);
       return p - pstr->mbs - idx;
     }
-  else
-# endif /* _LIBC */
-    return 1;
+#endif /* _LIBC */
+
+  return 1;
 }
-#endif /* RE_ENABLE_I18N */
 
 #ifdef _LIBC
 # if __GNUC__ >= 7