cleanup utf-8 multibyte code, use visibility if possible

this code was written independently of musl, with support for a the
backwards, nonstandard "31-bit unicode" some libraries/apps might
want. unfortunately the extra code (inside #ifdef) makes the source
harder to read and makes code that should be simple look complex, so
i'm removing it. anyone who wants to use the old code can find it in
the history or from elsewhere.

also, change the visibility of the __fsmu8 state machine table to
hidden, if supported. this should improve performance slightly in
shared-library builds.

1 files changed, 1 insertions, 27 deletions

diff --git a/src/multibyte/internal.c b/src/multibyte/internal.c
index e9b938dd..11b9818f 100644
--- a/src/multibyte/internal.c
+++ b/src/multibyte/internal.c
@@ -15,27 +15,6 @@
                  R(0x80,0xc0) ) \
              | ( R(0x80,0xc0) >> 6 ) \
              | x )
-#ifdef I_FAILED_TO_RTFM_RFC3629
-#define F0(x) (( x==0 ? R(0x90,0xc0) : \
-                 R(0x80,0xc0) ) \
-             | ( R(0x80,0xc0) >> 6 ) \
-             | ( R(0x80,0xc0) >> 12 ) \
-             | x )
-#define F8(x) (( x==0 ? R(0xa0,0xc0) : \
-                 R(0x80,0xc0) ) \
-             | ( R(0x80,0xc0) >> 6 ) \
-             | ( R(0x80,0xc0) >> 12 ) \
-             | ( R(0x80,0xc0) >> 18 ) \
-             | x )
-#define FC(x) (( x==0 ? R(0x88,0xc0) : \
-                 R(0x80,0xc0) ) \
-             | ( R(0x80,0xc0) >> 6 ) \
-             | ( R(0x80,0xc0) >> 12 ) \
-             | ( R(0x80,0xc0) >> 18 ) \
-             | ( R(0x80,0xc0) >> 24 ) \
-             | x )
-#define F(x) ( x<8 ? F0(x) : x<12 ? F8((x&3)) : x<14 ? FC((x&1)) : -1 )
-#else
 #define F(x) ( ( x>=5 ? 0 : \
                  x==0 ? R(0x90,0xc0) : \
                  x==4 ? R(0x80,0xa0) : \
@@ -43,7 +22,6 @@
              | ( R(0x80,0xc0) >> 6 ) \
              | ( R(0x80,0xc0) >> 12 ) \
              | x )
-#endif
 
 const uint32_t bittab[] = {
 	              C(0x2),C(0x3),C(0x4),C(0x5),C(0x6),C(0x7),
@@ -52,9 +30,5 @@ const uint32_t bittab[] = {
 	D(0x8),D(0x9),D(0xa),D(0xb),D(0xc),D(0xd),D(0xe),D(0xf),
 	E(0x0),E(0x1),E(0x2),E(0x3),E(0x4),E(0x5),E(0x6),E(0x7),
 	E(0x8),E(0x9),E(0xa),E(0xb),E(0xc),E(0xd),E(0xe),E(0xf),
-	F(0x0),F(0x1),F(0x2),F(0x3),F(0x4),
-#ifdef I_FAILED_TO_RTFM_RFC3629
-	                                   F(0x5),F(0x6),F(0x7),
-	F(0x8),F(0x9),F(0xa),F(0xb),F(0xc),F(0xd)
-#endif
+	F(0x0),F(0x1),F(0x2),F(0x3),F(0x4)
 };