Remove char_u: after_pathstep()

See: #459

src/nvim/eval.c

@@ -12417,7 +12417,7 @@ static void f_resolve(typval_T *argvars, typval_T *rettv)
       is_relative_to_current = TRUE;
 
     len = STRLEN(p);
-    if (len > 0 && after_pathsep(p, p + len)) {
+    if (len > 0 && after_pathsep((char *)p, (char *)p + len)) {
       has_trailing_pathsep = TRUE;
       p[len - 1] = NUL;       /* the trailing slash breaks readlink() */
     }
@@ -12531,7 +12531,7 @@ static void f_resolve(typval_T *argvars, typval_T *rettv)
      * if the argument had none.  But keep "/" or "//". */
     if (!has_trailing_pathsep) {
       q = p + STRLEN(p);
-      if (after_pathsep(p, q))
+      if (after_pathsep((char *)p, (char *)q))
         *path_tail_with_sep(p) = NUL;
     }
 
@@ -19921,7 +19921,7 @@ repeat:
     valid |= VALID_HEAD;
     *usedlen += 2;
     s = get_past_head(*fnamep);
-    while (tail > s && after_pathsep(s, tail))
+    while (tail > s && after_pathsep((char *)s, (char *)tail))
       mb_ptr_back(*fnamep, tail);
     *fnamelen = (int)(tail - *fnamep);
     if (*fnamelen == 0) {
@@ -19930,7 +19930,7 @@ repeat:
       *bufp = *fnamep = tail = vim_strsave((char_u *)".");
       *fnamelen = 1;
     } else {
-      while (tail > s && !after_pathsep(s, tail))
+      while (tail > s && !after_pathsep((char *)s, (char *)tail))
         mb_ptr_back(*fnamep, tail);
     }
   }

src/nvim/fileio.c

@@ -422,7 +422,7 @@ readfile (
    */
   if (fname != NULL && *fname != NUL) {
     p = fname + STRLEN(fname);
-    if (after_pathsep(fname, p) || STRLEN(fname) >= MAXPATHL) {
+    if (after_pathsep((char *)fname, (char *)p) || STRLEN(fname) >= MAXPATHL) {
       filemess(curbuf, fname, (char_u *)_("Illegal file name"), 0);
       msg_end();
       msg_scroll = msg_save;
@@ -4369,7 +4369,7 @@ modname (
       xfree(retval);
       return NULL;
     }
-    if (!after_pathsep(retval, retval + fnamelen)) {
+    if (!after_pathsep((char *)retval, (char *)retval + fnamelen)) {
       retval[fnamelen++] = PATHSEP;
       retval[fnamelen] = NUL;
     }

src/nvim/memline.c

@@ -1340,7 +1340,7 @@ recover_names (
         num_names = 3;
       } else {
         p = dir_name + STRLEN(dir_name);
-        if (after_pathsep(dir_name, p) && p[-1] == p[-2]) {
+        if (after_pathsep((char *)dir_name, (char *)p) && p[-1] == p[-2]) {
           /* Ends with '//', Use Full path for swap name */
           tail = make_percent_swname(dir_name, fname_res);
         } else {
@@ -3066,7 +3066,7 @@ char_u *makeswapname(char_u *fname, char_u *ffname, buf_T *buf, char_u *dir_name
 #endif
 
   s = dir_name + STRLEN(dir_name);
-  if (after_pathsep(dir_name, s) && s[-1] == s[-2]) { /* Ends with '//', Use Full path */
+  if (after_pathsep((char *)dir_name, (char *)s) && s[-1] == s[-2]) { /* Ends with '//', Use Full path */
     r = NULL;
     if ((s = make_percent_swname(dir_name, fname)) != NULL) {
       r = modname(s, (char_u *)".swp", FALSE);

src/nvim/os/env.c

@@ -343,7 +343,7 @@ void expand_env_esc(char_u *srcp, char_u *dst, int dstlen, bool esc, bool one,
         c = (int)STRLEN(var);
         /* if var[] ends in a path separator and tail[] starts
          * with it, skip a character */
-        if (*var != NUL && after_pathsep(dst, dst + c)
+        if (*var != NUL && after_pathsep((char *)dst, (char *)dst + c)
 #if defined(BACKSLASH_IN_FILENAME)
             && dst[-1] != ':'
 #endif
@@ -410,7 +410,7 @@ static char *remove_tail(char *p, char *pend, char *name)
 
   if (newend >= p
       && fnamencmp((char_u *)newend, (char_u *)name, len - 1) == 0
-      && (newend == p || after_pathsep((char_u *)p, (char_u *)newend)))
+      && (newend == p || after_pathsep(p, newend)))
     return newend;
   return pend;
 }
@@ -488,7 +488,7 @@ char_u *vim_getenv(char_u *name, bool *mustfree)
       }
 
       /* remove trailing path separator */
-      if (pend > p && after_pathsep(p, pend))
+      if (pend > p && after_pathsep((char *)p, (char *)pend))
         --pend;
 
       // check that the result is a directory name

src/nvim/path.c

@@ -122,7 +122,7 @@ char_u *path_tail_with_sep(char_u *fname)
   // Don't remove the '/' from "c:/file".
   char_u *past_head = get_past_head(fname);
   char_u *tail = path_tail(fname);
-  while (tail > past_head && after_pathsep(fname, tail)) {
+  while (tail > past_head && after_pathsep((char *)fname, (char *)tail)) {
     tail--;
   }
   return tail;
@@ -353,7 +353,7 @@ char_u *concat_fnames(char_u *fname1, char_u *fname2, int sep)
  */
 void add_pathsep(char_u *p)
 {
-  if (*p != NUL && !after_pathsep(p, p + STRLEN(p)))
+  if (*p != NUL && !after_pathsep((char *)p, (char *)p + STRLEN(p)))
     STRCAT(p, PATHSEPSTR);
 }
 
@@ -1356,7 +1356,7 @@ void simplify_filename(char_u *filename)
 
           --p;
           /* Skip back to after previous '/'. */
-          while (p > start && !after_pathsep(start, p))
+          while (p > start && !after_pathsep((char *)start, (char *)p))
             mb_ptr_back(start, p);
 
           if (!do_strip) {
@@ -1682,10 +1682,10 @@ void path_fix_case(char_u *name)
  * Takes care of multi-byte characters.
  * "b" must point to the start of the file name
  */
-int after_pathsep(char_u *b, char_u *p)
+int after_pathsep(char *b, char *p)
 {
   return p > b && vim_ispathsep(p[-1])
-         && (!has_mbyte || (*mb_head_off)(b, p - 1) == 0);
+         && (!has_mbyte || (*mb_head_off)((char_u *)b, (char_u *)p - 1) == 0);
 }
 
 /*
@@ -1761,7 +1761,7 @@ int pathcmp(const char *p, const char *q, int maxlen)
   /* ignore a trailing slash, but not "//" or ":/" */
   if (c2 == NUL
       && i > 0
-      && !after_pathsep((char_u *)s, (char_u *)s + i)
+      && !after_pathsep((char *)s, (char *)s + i)
 #ifdef BACKSLASH_IN_FILENAME
       && (c1 == '/' || c1 == '\\')
 #else