docs: misc (#29622)

Co-authored-by: Christian Clason <c.clason@uni-graz.at>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>

src/nvim/diff.c

@@ -213,9 +213,7 @@ void diff_buf_add(buf_T *buf)
   semsg(_("E96: Cannot diff more than %" PRId64 " buffers"), (int64_t)DB_COUNT);
 }
 
-///
 /// Remove all buffers to make diffs for.
-///
 static void diff_buf_clear(void)
 {
   for (int i = 0; i < DB_COUNT; i++) {
@@ -367,7 +365,6 @@ static void diff_mark_adjust_tp(tabpage_T *tp, int idx, linenr_T line1, linenr_T
       break;
     }
 
-    //
     // Check for these situations:
     //    1  2  3
     //    1  2  3
@@ -835,7 +832,6 @@ static int diff_write(buf_T *buf, diffin_T *din)
   return r;
 }
 
-///
 /// Update the diffs for all buffers involved.
 ///
 /// @param dio
@@ -909,20 +905,16 @@ theend:
   xfree(dio->dio_diff.dout_fname);
 }
 
-///
 /// Return true if the options are set to use the internal diff library.
 /// Note that if the internal diff failed for one of the buffers, the external
 /// diff will be used anyway.
-///
 int diff_internal(void)
   FUNC_ATTR_PURE
 {
   return (diff_flags & DIFF_INTERNAL) != 0 && *p_dex == NUL;
 }
 
-///
 /// Return true if the internal diff failed for one of the diff buffers.
-///
 static int diff_internal_failed(void)
 {
   // Only need to do something when there is another buffer.
@@ -1003,11 +995,9 @@ theend:
   }
 }
 
-///
 /// Do a quick test if "diff" really works.  Otherwise it looks like there
 /// are no differences.  Can't use the return value, it's non-zero when
 /// there are differences.
-///
 static int check_external_diff(diffio_T *diffio)
 {
   // May try twice, first with "-a" and then without.
@@ -1091,9 +1081,7 @@ static int check_external_diff(diffio_T *diffio)
   return OK;
 }
 
-///
 /// Invoke the xdiff function.
-///
 static int diff_file_internal(diffio_T *diffio)
 {
   xpparam_t param;
@@ -1813,9 +1801,7 @@ void diff_clear(tabpage_T *tp)
   tp->tp_first_diff = NULL;
 }
 
-///
-/// return true if the options are set to use diff linematch
-///
+/// Return true if the options are set to use diff linematch.
 bool diff_linematch(diff_T *dp)
 {
   if (!(diff_flags & DIFF_LINEMATCH)) {

src/nvim/edit.c

@@ -2027,7 +2027,6 @@ static void insert_special(int c, int allow_modmask, int ctrlv)
 // '0' and '^' are special, because they can be followed by CTRL-D.
 #define ISSPECIAL(c)   ((c) < ' ' || (c) >= DEL || (c) == '0' || (c) == '^')
 
-///
 /// "flags": INSCHAR_FORMAT - force formatting
 ///          INSCHAR_CTRLV  - char typed just after CTRL-V
 ///          INSCHAR_NO_FEX - don't use 'formatexpr'

src/nvim/eval.lua

@@ -5293,7 +5293,7 @@ M.funcs = {
       Note that `v:_null_string`, `v:_null_list`, `v:_null_dict` and
       `v:_null_blob` have the same `id()` with different types
       because they are internally represented as NULL pointers.
-      `id()` returns a hexadecimal representanion of the pointers to
+      `id()` returns a hexadecimal representation of the pointers to
       the containers (i.e. like `0x994a40`), same as `printf("%p",
       {expr})`, but it is advised against counting on the exact
       format of the return value.

src/nvim/getchar.c

@@ -1678,8 +1678,8 @@ int vgetc(void)
         vgetc_char = c;
       }
 
-      // a keypad or special function key was not mapped, use it like
-      // its ASCII equivalent
+      // A keypad or special function key was not mapped, use it like
+      // its ASCII equivalent.
       switch (c) {
       case K_KPLUS:
         c = '+'; break;

src/nvim/globals.h

@@ -106,7 +106,8 @@ EXTERN int Columns INIT( = DFLT_COLS);  // nr of columns in the screen
 // held down based on the MOD_MASK_* symbols that are read first.
 EXTERN int mod_mask INIT( = 0);  // current key modifiers
 
-// The value of "mod_mask" and the unmodified character before calling merge_modifiers().
+// The value of "mod_mask" and the unmodified character in vgetc() after it has
+// called vgetorpeek() enough times.
 EXTERN int vgetc_mod_mask INIT( = 0);
 EXTERN int vgetc_char INIT( = 0);
 

src/nvim/highlight_group.c

@@ -2273,7 +2273,6 @@ void highlight_changed(void)
   // sentinel value. used when no highlight namespace is active
   highlight_attr[HLF_COUNT] = 0;
 
-  //
   // Setup the user highlights
   //
   // Temporarily utilize 10 more hl entries:

src/nvim/indent_c.c

@@ -3419,9 +3419,7 @@ term_again:
       break;
     }
 
-    //
     // Skip preprocessor directives and blank lines.
-    //
     if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum, &amount)) {
       continue;
     }

src/nvim/main.c

@@ -545,10 +545,8 @@ int main(int argc, char **argv)
 
   no_wait_return = true;
 
-  //
   // Create the requested number of windows and edit buffers in them.
   // Also does recovery if "recoverymode" set.
-  //
   create_windows(&params);
   TIME_MSG("opening buffers");
 

src/nvim/normal.c

@@ -1660,7 +1660,6 @@ size_t find_ident_at_pos(win_T *wp, linenr_T lnum, colnr_T startcol, char **text
     // When starting on a ']' count it, so that we include the '['.
     bn = ptr[col] == ']';
 
-    //
     // 2. Back up to start of identifier/text.
     //
     // Remember class of character under cursor.