locale: fix partial change

now always inspect the hints hash value, as the hints bit
can mean plain or partial, both.
This made 'use locale' slower, but freed the hints bit.

lib/locale.pm

@@ -51,7 +51,6 @@ to behave as if in the "C" locale; attempts to change the locale will fail.
 # argument.
 
 $locale::hint_bits = 0x4;
-# $locale::partial_hint_bits = 0x10;  # Unused. If pragma had an argument
 
 # The pseudo-category :characters consists of 2 real ones; but it also is
 # given its own number, -1, because in the complement form it also has the
@@ -99,10 +98,8 @@ sub import {
                 next;
             }
 
-            # $^H |= $locale::partial_hint_bits;
-            # This form of the pragma did override the other
+            $^H |= $locale::hint_bits;
             # Now check the $^H{locale} value.
-            # $^H &= ~$locale::hint_bits;
 
             $arg =~ s/^://;
 

locale.c

@@ -4968,7 +4968,12 @@ Perl__is_in_locale_category(pTHX_ const bool compiling, const int category)
     /* The pseudo-category 'not_characters' is -1, so just add 1 to each to get
      * a valid unsigned */
     assert(category >= -1);
-    return cBOOL(SvUV(cat_sv) & (1U << (category + 1)));
+    /* The 0 check is for the old HINTS_LOCALE via use locale;
+       The -1 check is for IN_UNI_8_BIT
+     */
+    return cBOOL(
+                 (category != -1 && SvUV(cat_sv) == 0)
+                 || SvUV(cat_sv) & (1U << (category + 1)) );
 }
 
 char *

perl.h

@@ -5372,7 +5372,8 @@ EXTCONST char *const PL_phase_names[];
 #  define PL_amagic_generation PL_na
 #endif /* !PERL_CORE */
 
-#define PL_hints PL_compiling.cop_hints
+#define PL_hints 	PL_compiling.cop_hints
+#define PL_hints_hash 	PL_compiling.cop_hints_hash
 
 END_EXTERN_C
 
@@ -5409,7 +5410,7 @@ END_EXTERN_C
 #define HINT_STRICT_REFS	0x00000002 /* strict pragma */
 #define HINT_LOCALE		0x00000004 /* locale pragma */
 #define HINT_BYTES		0x00000008 /* bytes pragma */
-#define HINT_LOCALE_PARTIAL	0x00000004 /* ignored. was a subset of categories */
+#define HINT_LOCALE_PARTIAL	0x00000004 /* ignored. was 0x10 categories subset */
 #define HINT_EXACT_ARITH	0x00000010 /* exact_arith pragma */
 
 #define HINT_EXPLICIT_STRICT_REFS	0x00000020 /* strict.pm */
@@ -6379,39 +6380,48 @@ typedef struct am_table_short AMTS;
 
 /* Returns TRUE if the plain locale pragma without a parameter is in effect
  */
-#   define IN_LOCALE_RUNTIME	(PL_curcop \
-                                && CopHINTS_get(PL_curcop) & HINT_LOCALE)
+#   define IN_LOCALE_RUNTIME                                                \
+        (PL_curcop                                                          \
+         && CopHINTS_get(PL_curcop) & HINT_LOCALE                           \
+         && !SvIVX(cophh_fetch_pvs(PL_curcop->cop_hints_hash, "locale", 0)) \
+         )
 
-/* Returns TRUE if either form of the locale pragma is in effect */
+/* Returns TRUE if either form of the locale pragma is in effect (unused) */
 #   define IN_SOME_LOCALE_FORM_RUNTIME   \
-           cBOOL(CopHINTS_get(PL_curcop) & (HINT_LOCALE|HINT_LOCALE_PARTIAL))
+        cBOOL(CopHINTS_get(PL_curcop) & HINT_LOCALE)
 
-#   define IN_LOCALE_COMPILETIME	cBOOL(PL_hints & HINT_LOCALE)
+/* (used) */
+#   define IN_LOCALE_COMPILETIME                                    \
+        cBOOL(PL_hints & HINT_LOCALE                                \
+              && !SvIVX(cophh_fetch_pvs(PL_hints_hash, "locale", 0)))
+/* (unused) */
 #   define IN_SOME_LOCALE_FORM_COMPILETIME \
-                          cBOOL(PL_hints & (HINT_LOCALE|HINT_LOCALE_PARTIAL))
+        cBOOL(PL_hints & HINT_LOCALE)
 
+/* Only for use locale; (used) */
 #   define IN_LOCALE \
 	(IN_PERL_COMPILETIME ? IN_LOCALE_COMPILETIME : IN_LOCALE_RUNTIME)
+/* use locale ... ; (unused) */
 #   define IN_SOME_LOCALE_FORM \
 	(IN_PERL_COMPILETIME ? IN_SOME_LOCALE_FORM_COMPILETIME \
 	                     : IN_SOME_LOCALE_FORM_RUNTIME)
 
 #   define IN_LC_ALL_COMPILETIME   IN_LOCALE_COMPILETIME
 #   define IN_LC_ALL_RUNTIME       IN_LOCALE_RUNTIME
 
+/* the next 5 are actually used */
 #   define IN_LC_PARTIAL_COMPILETIME   \
-		cBOOL(PL_hints & HINT_LOCALE_PARTIAL)
+	cBOOL(PL_hints & HINT_LOCALE_PARTIAL)
 #   define IN_LC_PARTIAL_RUNTIME  \
-               (PL_curcop && CopHINTS_get(PL_curcop) & HINT_LOCALE_PARTIAL)
-
-#   define IN_LC_COMPILETIME(category)                                       \
-       (IN_LC_ALL_COMPILETIME || (IN_LC_PARTIAL_COMPILETIME                  \
-                  && Perl__is_in_locale_category(aTHX_ TRUE, (category))))
-#   define IN_LC_RUNTIME(category)                                           \
-       (IN_LC_ALL_RUNTIME || (IN_LC_PARTIAL_RUNTIME                          \
-                  && Perl__is_in_locale_category(aTHX_ FALSE, (category))))
+        cBOOL(PL_curcop && CopHINTS_get(PL_curcop) & HINT_LOCALE_PARTIAL)
+
+#   define IN_LC_COMPILETIME(category) \
+	(IN_LC_PARTIAL_COMPILETIME  && Perl__is_in_locale_category(aTHX_  TRUE, (category)))
+#   define IN_LC_RUNTIME(category)     \
+        (IN_LC_PARTIAL_RUNTIME && Perl__is_in_locale_category(aTHX_ FALSE, (category)))
 #   define IN_LC(category)  \
-                    (IN_LC_COMPILETIME(category) || IN_LC_RUNTIME(category))
+        (IN_LC_COMPILETIME(category) || IN_LC_RUNTIME(category))
+
 
 #  if defined (PERL_CORE) || defined (PERL_IN_XSUB_RE)