Simplify by assuming !_MSC_VER.

Emacs has not been portable to MSVC for some time (Bug#29040#57).
* admin/CPP-DEFINES (_MSC_VER): Remove.
* src/lisp.h (ENUM_BF, DEFUN):
* src/regex.c (re_char):
Simplify by assuming _MSC_VER is not defined.
* src/regex.c (const_re_char): Remove.
All uses replaced by re_char.

4 files changed, 15 insertions, 37 deletions

diff --git a/admin/CPP-DEFINES b/admin/CPP-DEFINES
index 10b558d1ada..eb3eadf2da8 100644
--- a/admin/CPP-DEFINES
+++ b/admin/CPP-DEFINES
@@ -19,7 +19,6 @@ __DJGPP_MINOR__ Minor version number of the DJGPP library; used only in msdos.c
 DOS_NT          Compiling for either the MS-DOS or native MS-Windows port.
 WINDOWSNT       Compiling the native MS-Windows (W32) port.
 __MINGW32__     Compiling the W32 port with the MinGW or MinGW-w64 ports of GCC.
-_MSC_VER        Compiling the W32 port with the Microsoft C compiler.
 MINGW_W64       Compiling the W32 port with the MinGW-w64 port of GCC.
 DARWIN_OS       Compiling on macOS or pure Darwin (and using s/darwin.h).
 SOLARIS2
diff --git a/src/lastfile.c b/src/lastfile.c
index 2901f148e17..13022792f25 100644
--- a/src/lastfile.c
+++ b/src/lastfile.c
@@ -49,9 +49,6 @@ char my_edata[] = "End of Emacs initialized data";
    isn't always a separate section in NT executables).  */
 char my_endbss[1];
 
-/* The Alpha MSVC linker globally segregates all static and public bss
-   data, so we must take both into account to determine the true extent
-   of the bss area used by Emacs.  */
 static char _my_endbss[1];
 char * my_endbss_static = _my_endbss;
 
diff --git a/src/lisp.h b/src/lisp.h
index a71ba22618e..1a8c3a0fe49 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -418,9 +418,8 @@ error !;
 #define case_Lisp_Int case Lisp_Int0: case Lisp_Int1
 
 /* Idea stolen from GDB.  Pedantic GCC complains about enum bitfields,
-   MSVC doesn't support them, and xlc and Oracle Studio c99 complain
-   vociferously about them.  */
-#if (defined __STRICT_ANSI__ || defined _MSC_VER || defined __IBMC__ \
+   and xlc and Oracle Studio c99 complain vociferously about them.  */
+#if (defined __STRICT_ANSI__ || defined __IBMC__ \
      || (defined __SUNPRO_C && __STDC__))
 #define ENUM_BF(TYPE) unsigned int
 #else
@@ -2935,23 +2934,12 @@ CHECK_NUMBER_CDR (Lisp_Object x)
 
 /* This version of DEFUN declares a function prototype with the right
    arguments, so we can catch errors with maxargs at compile-time.  */
-#ifdef _MSC_VER
-#define DEFUN(lname, fnname, sname, minargs, maxargs, intspec, doc)     \
-   Lisp_Object fnname DEFUN_ARGS_ ## maxargs ;                          \
-   static struct Lisp_Subr GCALIGNED sname =                            \
-   { { (PVEC_SUBR << PSEUDOVECTOR_AREA_BITS)                            \
-       | (sizeof (struct Lisp_Subr) / sizeof (EMACS_INT)) },            \
-      { (Lisp_Object (__cdecl *)(void))fnname },                        \
-       minargs, maxargs, lname, intspec, 0};                            \
-   Lisp_Object fnname
-#else  /* not _MSC_VER */
 #define DEFUN(lname, fnname, sname, minargs, maxargs, intspec, doc)     \
    static struct Lisp_Subr GCALIGNED sname =                            \
      { { PVEC_SUBR << PSEUDOVECTOR_AREA_BITS },                         \
        { .a ## maxargs = fnname },                                      \
        minargs, maxargs, lname, intspec, 0};                            \
    Lisp_Object fnname
-#endif
 
 /* defsubr (Sname);
    is how we define the symbol for function `name' at start-up time.  */
diff --git a/src/regex.c b/src/regex.c
index 330f2f78a84..d3d910daaa3 100644
--- a/src/regex.c
+++ b/src/regex.c
@@ -519,13 +519,7 @@ ptrdiff_t emacs_re_safe_alloca = MAX_ALLOCA;
 #endif
 
 /* Type of source-pattern and string chars.  */
-#ifdef _MSC_VER
-typedef unsigned char re_char;
-typedef const re_char const_re_char;
-#else
 typedef const unsigned char re_char;
-typedef re_char const_re_char;
-#endif
 
 typedef char boolean;
 
@@ -2403,7 +2397,7 @@ do {									\
   } while (0)
 
 static reg_errcode_t
-regex_compile (const_re_char *pattern, size_t size,
+regex_compile (re_char *pattern, size_t size,
 #ifdef emacs
 # define syntax RE_SYNTAX_EMACS
                bool posix_backtracking,
@@ -3728,7 +3722,7 @@ insert_op2 (re_opcode_t op, unsigned char *loc, int arg1, int arg2, unsigned cha
    least one character before the ^.  */
 
 static boolean
-at_begline_loc_p (const_re_char *pattern, const_re_char *p, reg_syntax_t syntax)
+at_begline_loc_p (re_char *pattern, re_char *p, reg_syntax_t syntax)
 {
   re_char *prev = p - 2;
   boolean odd_backslashes;
@@ -3769,7 +3763,7 @@ at_begline_loc_p (const_re_char *pattern, const_re_char *p, reg_syntax_t syntax)
    at least one character after the $, i.e., `P < PEND'.  */
 
 static boolean
-at_endline_loc_p (const_re_char *p, const_re_char *pend, reg_syntax_t syntax)
+at_endline_loc_p (re_char *p, re_char *pend, reg_syntax_t syntax)
 {
   re_char *next = p;
   boolean next_backslash = *next == '\\';
@@ -3813,7 +3807,7 @@ group_in_compile_stack (compile_stack_type compile_stack, regnum_t regnum)
    Return -1 if fastmap was not updated accurately.  */
 
 static int
-analyze_first (const_re_char *p, const_re_char *pend, char *fastmap,
+analyze_first (re_char *p, re_char *pend, char *fastmap,
                const int multibyte)
 {
   int j, k;
@@ -4555,7 +4549,7 @@ static int bcmp_translate (re_char *s1, re_char *s2,
 /* If the operation is a match against one or more chars,
    return a pointer to the next operation, else return NULL.  */
 static re_char *
-skip_one_char (const_re_char *p)
+skip_one_char (re_char *p)
 {
   switch (*p++)
     {
@@ -4597,7 +4591,7 @@ skip_one_char (const_re_char *p)
 
 /* Jump over non-matching operations.  */
 static re_char *
-skip_noops (const_re_char *p, const_re_char *pend)
+skip_noops (re_char *p, re_char *pend)
 {
   int mcnt;
   while (p < pend)
@@ -4628,7 +4622,7 @@ skip_noops (const_re_char *p, const_re_char *pend)
    character (i.e. without any translations).  UNIBYTE denotes whether c is
    unibyte or multibyte character. */
 static bool
-execute_charset (const_re_char **pp, unsigned c, unsigned corig, bool unibyte)
+execute_charset (re_char **pp, unsigned c, unsigned corig, bool unibyte)
 {
   re_char *p = *pp, *rtp = NULL;
   bool not = (re_opcode_t) *p == charset_not;
@@ -4692,8 +4686,8 @@ execute_charset (const_re_char **pp, unsigned c, unsigned corig, bool unibyte)
 
 /* Non-zero if "p1 matches something" implies "p2 fails".  */
 static int
-mutually_exclusive_p (struct re_pattern_buffer *bufp, const_re_char *p1,
-                      const_re_char *p2)
+mutually_exclusive_p (struct re_pattern_buffer *bufp, re_char *p1,
+                      re_char *p2)
 {
   re_opcode_t op2;
   const boolean multibyte = RE_MULTIBYTE_P (bufp);
@@ -4931,8 +4925,8 @@ WEAK_ALIAS (__re_match_2, re_match_2)
 /* This is a separate function so that we can force an alloca cleanup
    afterwards.  */
 static regoff_t
-re_match_2_internal (struct re_pattern_buffer *bufp, const_re_char *string1,
-                     size_t size1, const_re_char *string2, size_t size2,
+re_match_2_internal (struct re_pattern_buffer *bufp, re_char *string1,
+                     size_t size1, re_char *string2, size_t size2,
                      ssize_t pos, struct re_registers *regs, ssize_t stop)
 {
   /* General temporaries.  */
@@ -6222,10 +6216,10 @@ re_match_2_internal (struct re_pattern_buffer *bufp, const_re_char *string1,
    bytes; nonzero otherwise.  */
 
 static int
-bcmp_translate (const_re_char *s1, const_re_char *s2, register ssize_t len,
+bcmp_translate (re_char *s1, re_char *s2, ssize_t len,
                 RE_TRANSLATE_TYPE translate, const int target_multibyte)
 {
-  register re_char *p1 = s1, *p2 = s2;
+  re_char *p1 = s1, *p2 = s2;
   re_char *p1_end = s1 + len;
   re_char *p2_end = s2 + len;