docs: misc (#28609)

Closes https://github.com/neovim/neovim/issues/28484.
Closes https://github.com/neovim/neovim/issues/28719.

Co-authored-by: Chris <crwebb85@gmail.com>
Co-authored-by: Gregory Anders <greg@gpanders.com>
Co-authored-by: Jake B <16889000+jakethedev@users.noreply.github.com>
Co-authored-by: Jonathan Raines <jonathan.s.raines@gmail.com>
Co-authored-by: Yi Ming <ofseed@foxmail.com>
Co-authored-by: Zane Dufour <zane@znd4.me>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>

src/nvim/cursor.c

@@ -353,7 +353,7 @@ void check_cursor_col(win_T *win)
     // Allow cursor past end-of-line when:
     // - in Insert mode or restarting Insert mode
     // - in Visual mode and 'selection' isn't "old"
-    // - 'virtualedit' is set */
+    // - 'virtualedit' is set
     if ((State & MODE_INSERT) || restart_edit
         || (VIsual_active && *p_sel != 'o')
         || (cur_ve_flags & VE_ONEMORE)

src/nvim/ex_docmd.c

@@ -4082,7 +4082,7 @@ void separate_nextcmd(exarg_T *eap)
         break;
       }
     } else if (
-               // Check for '"': start of comment or '|': next command */
+               // Check for '"': start of comment or '|': next command
                // :@" does not start a comment!
                // :redir @" doesn't either.
                (*p == '"'

src/nvim/grid.c

@@ -443,7 +443,7 @@ int grid_line_puts(int col, const char *text, int textlen, int attr)
 
     if (col + mbyte_cells > max_col) {
       // Only 1 cell left, but character requires 2 cells:
-      // display a '>' in the last column to avoid wrapping. */
+      // display a '>' in the last column to avoid wrapping.
       schar = schar_from_ascii('>');
       mbyte_cells = 1;
     }

src/nvim/highlight_group.c

@@ -1963,7 +1963,7 @@ int syn_name2id_len(const char *name, size_t len)
     return 0;
   }
 
-  // Avoid using stricmp() too much, it's slow on some systems */
+  // Avoid using stricmp() too much, it's slow on some systems
   // Avoid alloc()/free(), these are slow too.
   vim_memcpy_up(name_u, name, len);
   name_u[len] = '\0';

src/nvim/indent_c.c

@@ -1197,7 +1197,7 @@ static int cin_is_cpp_baseclass(cpp_baseclass_cache_T *cached)
       s = line;
     }
     if (s == line) {
-      // don't recognize "case (foo):" as a baseclass */
+      // don't recognize "case (foo):" as a baseclass
       if (cin_iscase(s, false)) {
         break;
       }

src/nvim/mapping.c

@@ -1812,8 +1812,7 @@ int makemap(FILE *fd, buf_T *buf)
           iemsg(_("E228: makemap: Illegal mode"));
           return FAIL;
         }
-        do {
-          // do this twice if c2 is set, 3 times with c3 */
+        do {  // do this twice if c2 is set, 3 times with c3
           // When outputting <> form, need to make sure that 'cpo'
           // is set to the Vim default.
           if (!did_cpo) {

src/nvim/path.c

@@ -999,7 +999,7 @@ static void uniquefy_paths(garray_T *gap, char *pattern)
       memmove(path, path_cutoff, strlen(path_cutoff) + 1);
     } else {
       // Here all files can be reached without path, so get shortest
-      // unique path.  We start at the end of the path. */
+      // unique path.  We start at the end of the path.
       char *pathsep_p = path + len - 1;
       while (find_previous_pathsep(path, &pathsep_p)) {
         if (vim_regexec(&regmatch, pathsep_p + 1, 0)

src/nvim/regexp.c

@@ -10555,7 +10555,7 @@ nfa_do_multibyte:
       // NFA_END_COMPOSING is the ). Note that right now we are
       // building the postfix form, not the NFA itself;
       // a composing char could be: a, b, c, NFA_COMPOSING
-      // where 'b' and 'c' are chars with codes > 256. */
+      // where 'b' and 'c' are chars with codes > 256.
       while (true) {
         EMIT(c);
         if (i > 0) {

src/nvim/search.c

@@ -2460,7 +2460,7 @@ int current_search(int count, bool forward)
     // beginning of the file (cursor might be on the search match)
     // except when Visual mode is active, so that extending the visual
     // selection works.
-    if (i == 1 && !result) {  // not found, abort */
+    if (i == 1 && !result) {  // not found, abort
       curwin->w_cursor = orig_pos;
       if (VIsual_active) {
         VIsual = save_VIsual;
@@ -3677,9 +3677,8 @@ void find_pattern_in_path(char *ptr, Direction dir, size_t len, bool whole, bool
                                 true) & kEqualFiles) {
             if (type != CHECK_PATH
                 && action == ACTION_SHOW_ALL && files[i].matched) {
-              msg_putchar('\n');  // cursor below last one */
-              if (!got_int) {  // don't display if 'q' typed at "--more--"
-                               // message
+              msg_putchar('\n');  // cursor below last one
+              if (!got_int) {  // don't display if 'q' typed at "--more--" message
                 msg_home_replace_hl(new_fname);
                 msg_puts(_(" (includes previously listed match)"));
                 prev_fname = NULL;