Revert "regex: Add POSIXA1R node"

This reverts commit d62feba66bf43f35d092bb026694f927e9f94d38.

As explained in its commit message.  It adds some comments to point out
that the commit exists, for the curious.

1 files changed, 0 insertions, 31 deletions

diff --git a/regcomp.h b/regcomp.h
index 1d22d5bf7e..030bfa0534 100644
--- a/regcomp.h
+++ b/regcomp.h
@@ -119,37 +119,6 @@ struct regnode_string {
     char string[1];
 };
 
-/* Low 3 bits are for the 16's count */
-#define POSIXA1R_1x_SHIFT    3
-#define POSIXA1R_1L_SHIFT    4
-#define POSIXA1R_MASK_SHIFT  5   /* Has to be the bit that differs between
-                                    upper and lower-case */
-#define POSIXA1R_16L_SHIFT   6
-#define POSIXA1R_68L_SHIFT   7
-
-#define POSIXA1R_1x_BIT      (1U << POSIXA1R_1x_SHIFT)
-#define POSIXA1R_1L_BIT      (1U << POSIXA1R_1L_SHIFT)
-#define POSIXA1R_16L_BIT     (1U << POSIXA1R_16L_SHIFT)
-#define POSIXA1R_68L_BIT     (1U << POSIXA1R_68L_SHIFT)
-#define POSIXA1R_ALPHA_BIT   (1U << POSIXA1R_MASK_SHIFT)
-
-#define POSIXA1Rbase(n)                                                     \
-            (  '0' - 48                                                     \
-             + (1  * ((n)->flags & POSIXA1R_1x_BIT) >> POSIXA1R_1x_SHIFT)   \
-             + (16 * ((n)->flags & 7)))
-
-#define POSIXA1Rdelta(n)                                                    \
-        (    9                                                              \
-         + ( 1 * (((n)->flags & POSIXA1R_1L_BIT)  >> POSIXA1R_1L_SHIFT))    \
-         + (16 * (((n)->flags & POSIXA1R_16L_BIT) >> POSIXA1R_16L_SHIFT))   \
-         + (68 * (((n)->flags & POSIXA1R_68L_BIT) >> POSIXA1R_68L_SHIFT)))
-/*          __  Summing the above yields:
- *          94  which is the delta for [:print:], SPACE to TILDE (32 to 126 */
-
-#define POSIXA1Rmasked(n, c)                                                \
-     (((U8) (c)) & (((n)->flags & POSIXA1R_ALPHA_BIT) | ~POSIXA1R_ALPHA_BIT))
-
-
 struct regnode_lstring { /* Constructed this way to keep the string aligned. */
     U8	flags;
     U8  type;