chore: use codespell to spell check #15016

CONTRIBUTING.md

@@ -75,7 +75,7 @@ For Comment) and `[RDY]` (Ready).
 
 ### Commit messages
 
-Follow the [convential commits guidelines][conventional_commits] to *make reviews easier* and to make
+Follow the [conventional commits guidelines][conventional_commits] to *make reviews easier* and to make
 the VCS/git logs more valuable. The general structure of a commit message is as follows:
 
 ```

src/nvim/api/ui.c

@@ -158,7 +158,7 @@ void nvim_ui_attach(uint64_t channel_id, Integer width, Integer height,
   }
 
   if (ui->ui_ext[kUIMessages]) {
-    // This uses attribute indicies, so ext_linegrid is needed.
+    // This uses attribute indices, so ext_linegrid is needed.
     ui->ui_ext[kUILinegrid] = true;
     // Cmdline uses the messages area, so it should be externalized too.
     ui->ui_ext[kUICmdline] = true;

src/nvim/api/vim.c

@@ -217,7 +217,7 @@ Dictionary nvim__get_hl_defs(Integer ns_id, Error *err)
 ///
 /// @param ns_id number of namespace for this highlight
 /// @param name highlight group name, like ErrorMsg
-/// @param val highlight definiton map, like |nvim_get_hl_by_name|.
+/// @param val highlight definition map, like |nvim_get_hl_by_name|.
 ///            in addition the following keys are also recognized:
 ///              `default`: don't override existing definition,
 ///                         like `hi default`
@@ -384,7 +384,7 @@ Integer nvim_input(String keys)
 ///       by calling it multiple times in a loop: the intermediate mouse
 ///       positions will be ignored. It should be used to implement real-time
 ///       mouse input in a GUI. The deprecated pseudokey form
-///       ("<LeftMouse><col,row>") of |nvim_input()| has the same limitiation.
+///       ("<LeftMouse><col,row>") of |nvim_input()| has the same limitation.
 ///
 /// @param button Mouse button: one of "left", "right", "middle", "wheel".
 /// @param action For ordinary buttons, one of "press", "drag", "release".
@@ -558,7 +558,7 @@ Object nvim_exec_lua(String code, Array args, Error *err)
 /// Notify the user with a message
 ///
 /// Relays the call to vim.notify . By default forwards your message in the
-/// echo area but can be overriden to trigger desktop notifications.
+/// echo area but can be overridden to trigger desktop notifications.
 ///
 /// @param msg        Message to display to the user
 /// @param log_level  The log level
@@ -1260,7 +1260,7 @@ fail:
 ///
 /// By default (and currently the only option) the terminal will not be
 /// connected to an external process. Instead, input send on the channel
-/// will be echoed directly by the terminal. This is useful to disply
+/// will be echoed directly by the terminal. This is useful to display
 /// ANSI terminal sequences returned as part of a rpc message, or similar.
 ///
 /// Note: to directly initiate the terminal using the right size, display the
@@ -1290,7 +1290,7 @@ Integer nvim_open_term(Buffer buffer, Dictionary opts, Error *err)
   TerminalOptions topts;
   Channel *chan = channel_alloc(kChannelStreamInternal);
   topts.data = chan;
-  // NB: overriden in terminal_check_size if a window is already
+  // NB: overridden in terminal_check_size if a window is already
   // displaying the buffer
   topts.width = (uint16_t)MAX(curwin->w_width_inner - win_col_off(curwin), 0);
   topts.height = (uint16_t)curwin->w_height_inner;
@@ -2237,7 +2237,7 @@ typedef kvec_withinit_t(ExprASTConvStackItem, 16) ExprASTConvStack;
 ///          - "arg": String, error message argument.
 ///        - "len": Amount of bytes successfully parsed. With flags equal to ""
 ///                 that should be equal to the length of expr string.
-///                 (“Sucessfully parsed” here means “participated in AST
+///                 (“Successfully parsed” here means “participated in AST
 ///                  creation”, not “till the first error”.)
 ///        - "ast": AST, either nil or a dictionary with these keys:
 ///          - "type": node type, one of the value names from ExprASTNodeType
@@ -2925,7 +2925,7 @@ void nvim__screenshot(String path)
 /// Note: this function should not be called often. Rather, the callbacks
 /// themselves can be used to throttle unneeded callbacks. the `on_start`
 /// callback can return `false` to disable the provider until the next redraw.
-/// Similarily, return `false` in `on_win` will skip the `on_lines` calls
+/// Similarly, return `false` in `on_win` will skip the `on_lines` calls
 /// for that window (but any extmarks set in `on_win` will still be used).
 /// A plugin managing multiple sources of decoration should ideally only set
 /// one provider, and merge the sources internally. You can use multiple `ns_id`

src/nvim/api/window.c

@@ -394,7 +394,7 @@ void nvim_win_set_config(Window window, Dictionary config, Error *err)
     return;
   }
   bool new_float = !win->w_floating;
-  // reuse old values, if not overriden
+  // reuse old values, if not overridden
   FloatConfig fconfig = new_float ? FLOAT_CONFIG_INIT : win->w_float_config;
 
   if (!parse_float_config(config, &fconfig, !new_float, false, err)) {

src/nvim/arabic.c

@@ -793,7 +793,7 @@ bool arabic_maycombine(int two)
   return false;
 }
 
-// A_firstc_laa returns first character of LAA combination if it ex.ists
+// A_firstc_laa returns first character of LAA combination if it exists
 // in: "c" base character
 // in: "c1" first composing character
 static int A_firstc_laa(int c, int c1)

src/nvim/buffer.c

@@ -1492,7 +1492,7 @@ void set_curbuf(buf_T *buf, int action)
   set_bufref(&prevbufref, prevbuf);
   set_bufref(&newbufref, buf);
 
-  // Autocommands may delete the curren buffer and/or the buffer we wan to go
+  // Autocommands may delete the curren buffer and/or the buffer we want to go
   // to.  In those cases don't close the buffer.
   if (!apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, false, curbuf)
       || (bufref_valid(&prevbufref) && bufref_valid(&newbufref)
@@ -1673,7 +1673,7 @@ static int top_file_num = 1;            ///< highest file number
 
 /// Initialize b:changedtick and changedtick_val attribute
 ///
-/// @param[out]  buf  Buffer to intialize for.
+/// @param[out]  buf  Buffer to initialize for.
 static inline void buf_init_changedtick(buf_T *const buf)
   FUNC_ATTR_ALWAYS_INLINE FUNC_ATTR_NONNULL_ALL
 {
@@ -3590,7 +3590,7 @@ int build_stl_str_hl(
 
 
   // Proceed character by character through the statusline format string
-  // fmt_p is the current positon in the input buffer
+  // fmt_p is the current position in the input buffer
   for (char_u *fmt_p = usefmt; *fmt_p; ) {
     if (curitem == (int)stl_items_len) {
         size_t new_len = stl_items_len * 3 / 2;
@@ -4738,7 +4738,7 @@ static bool append_arg_number(win_T *wp, char_u *buf, int buflen, bool add_file)
 // When resolving a link both "*sfname" and "*ffname" will point to the same
 // allocated memory.
 // The "*ffname" and "*sfname" pointer values on call will not be freed.
-// Note that the resulting "*ffname" pointer should be considered not allocaed.
+// Note that the resulting "*ffname" pointer should be considered not allocated.
 void fname_expand(buf_T *buf, char_u **ffname, char_u **sfname)
 {
   if (*ffname == NULL) {  // no file name given, nothing to do

src/nvim/buffer_updates.c

@@ -313,7 +313,7 @@ void buf_updates_send_splice(
     return;
   }
 
-  // notify each of the active callbakcs
+  // notify each of the active callbacks
   size_t j = 0;
   for (size_t i = 0; i < kv_size(buf->update_callbacks); i++) {
     BufUpdateCallbacks cb = kv_A(buf->update_callbacks, i);

src/nvim/change.c

@@ -1732,7 +1732,7 @@ int open_line(
   }
   if (did_append) {
     changed_lines(curwin->w_cursor.lnum, 0, curwin->w_cursor.lnum, 1L, true);
-    // bail out and just get the final lenght of the line we just manipulated
+    // bail out and just get the final length of the line we just manipulated
     bcount_t extra = (bcount_t)STRLEN(ml_get(curwin->w_cursor.lnum));
     extmark_splice(curbuf, (int)curwin->w_cursor.lnum-1, 0,
                    0, 0, 0, 1, 0, 1+extra, kExtmarkUndo);

src/nvim/decoration.c

@@ -30,7 +30,7 @@ void decor_init(void)
 /// @param src_id src_id to use or 0 to use a new src_id group,
 ///               or -1 for ungrouped highlight.
 /// @param hl_id Highlight group id
-/// @param pos_start Cursor position to start the hightlighting at
+/// @param pos_start Cursor position to start the highlighting at
 /// @param pos_end Cursor position to end the highlighting at
 /// @param offset Move the whole highlighting this many columns to the right
 void bufhl_add_hl_pos_offset(buf_T *buf,

src/nvim/diff.c

@@ -1869,7 +1869,7 @@ int diff_check(win_T *wp, linenr_T lnum)
 /// @param  idx1  first entry in diff "dp"
 /// @param  idx2  second entry in diff "dp"
 ///
-/// @return true if two entires are equal.
+/// @return true if two entries are equal.
 static bool diff_equal_entry(diff_T *dp, int idx1, int idx2)
   FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ARG(1)
 {

src/nvim/edit.c

@@ -2453,7 +2453,7 @@ static int ins_compl_add(char_u *const str, int len,
 ///
 /// @param  match  completion match
 /// @param  str    character string to check
-/// @param  len    lenth of "str"
+/// @param  len    length of "str"
 static bool ins_compl_equal(compl_T *match, char_u *str, size_t len)
   FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ALL
 {
@@ -8024,7 +8024,7 @@ static void ins_bs_one(colnr_T *vcolp)
 
 /// Handle Backspace, delete-word and delete-line in Insert mode.
 ///
-/// @param          c                 charcter that was typed
+/// @param          c                 character that was typed
 /// @param          mode              backspace mode to use
 /// @param[in,out]  inserted_space_p  whether a space was the last
 //                                    character inserted
@@ -8251,7 +8251,7 @@ static bool ins_bs(int c, int mode, int *inserted_space_p)
         ins_bs_one(&vcol);
       }
     } else {
-      // Delete upto starting point, start of line or previous word.
+      // Delete up to starting point, start of line or previous word.
       int prev_cclass = 0;
 
       int cclass = mb_get_class(get_cursor_pos_ptr());

src/nvim/eval.c

@@ -8151,7 +8151,7 @@ void set_vim_var_special(const VimVarIndex idx, const SpecialVarValue val)
 ///
 /// @param[in]  idx  Index of variable to set.
 /// @param[in]  val  Value to set to. Will be copied.
-/// @param[in]  len  Legth of that value or -1 in which case strlen() will be
+/// @param[in]  len  Length of that value or -1 in which case strlen() will be
 ///                  used.
 void set_vim_var_string(const VimVarIndex idx, const char *const val,
                         const ptrdiff_t len)
@@ -8957,7 +8957,7 @@ static void set_var_const(const char *name, const size_t name_len,
           const char *const val = tv_get_string(tv);
 
           // Careful: when assigning to v:errmsg and tv_get_string()
-          // causes an error message the variable will alrady be set.
+          // causes an error message the variable will already be set.
           if (v->di_tv.vval.v_string == NULL) {
             v->di_tv.vval.v_string = (char_u *)xstrdup(val);
           }

src/nvim/eval/executor.c

@@ -16,7 +16,7 @@ static char *e_letwrong = N_("E734: Wrong variable type for %s=");
 
 char *e_listidx = N_("E684: list index out of range: %" PRId64);
 
-/// Hanle tv1 += tv2, -=, *=, /=,  %=, .=
+/// Handle tv1 += tv2, -=, *=, /=,  %=, .=
 ///
 /// @param[in,out]  tv1  First operand, modified typval.
 /// @param[in]  tv2  Second operand.

src/nvim/eval/typval.c

@@ -836,7 +836,7 @@ int tv_list_join(garray_T *const gap, list_T *const l, const char *const sep)
   return retval;
 }
 
-/// Chech whether two lists are equal
+/// Check whether two lists are equal
 ///
 /// @param[in]  l1  First list to compare.
 /// @param[in]  l2  Second list to compare.

src/nvim/eval/typval.h

@@ -55,7 +55,7 @@ enum ListLenSpecials {
 #define VARNUMBER_MAX INT64_MAX
 #define UVARNUMBER_MAX UINT64_MAX
 
-/// Mimimal possible value of varnumber_T variable
+/// Minimal possible value of varnumber_T variable
 #define VARNUMBER_MIN INT64_MIN
 
 /// %d printf format specifier for varnumber_T
@@ -322,7 +322,7 @@ struct ufunc {
   int          uf_prof_initialized;
   // Managing cfuncs
   cfunc_T      uf_cb;            ///< C function extension callback
-  cfunc_free_T uf_cb_free;       ///< C function extesion free callback
+  cfunc_free_T uf_cb_free;       ///< C function extension free callback
   void        *uf_cb_state;      ///< State of C function extension.
   // Profiling the function as a whole.
   int          uf_tm_count;      ///< nr of calls

src/nvim/eval/userfunc.c

@@ -3029,13 +3029,13 @@ int do_return(exarg_T *eap, int reanimate, int is_cmd, void *rettv)
     current_funccal->returned = false;
   }
 
-  /*
+  //
-   * Cleanup (and inactivate) conditionals, but stop when a try conditional
+  // Cleanup (and deactivate) conditionals, but stop when a try conditional
-   * not in its finally clause (which then is to be executed next) is found.
+  // not in its finally clause (which then is to be executed next) is found.
-   * In this case, make the ":return" pending for execution at the ":endtry".
+  // In this case, make the ":return" pending for execution at the ":endtry".
-   * Otherwise, return normally.
+  // Otherwise, return normally.
-   */
+  //
-  idx = cleanup_conditionals(eap->cstack, 0, TRUE);
+  idx = cleanup_conditionals(eap->cstack, 0, true);
   if (idx >= 0) {
     cstack->cs_pending[idx] = CSTP_RETURN;
 

src/nvim/event/stream.c

@@ -19,7 +19,7 @@
 # include "event/stream.c.generated.h"
 #endif
 
-// For compatbility with libuv < 1.19.0 (tested on 1.18.0)
+// For compatibility with libuv < 1.19.0 (tested on 1.18.0)
 #if UV_VERSION_MINOR < 19
 #define uv_stream_get_write_queue_size(stream) stream->write_queue_size
 #endif

src/nvim/ex_cmds.c

@@ -103,7 +103,7 @@ typedef struct {
 // the preview window
 typedef struct {
   kvec_t(SubResult) subresults;
-  linenr_T lines_needed;  // lines neede in the preview window
+  linenr_T lines_needed;  // lines needed in the preview window
 } PreviewLines;
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS
@@ -4819,7 +4819,7 @@ char_u *check_help_lang(char_u *arg)
  * Return a heuristic indicating how well the given string matches.  The
  * smaller the number, the better the match.  This is the order of priorities,
  * from best match to worst match:
- *	- Match with least alpha-numeric characters is better.
+ *	- Match with least alphanumeric characters is better.
  *	- Match with least total characters is better.
  *	- Match towards the start is better.
  *	- Match starting with "+" is worse (feature instead of command)

src/nvim/ex_cmds2.c

@@ -3501,7 +3501,7 @@ void do_finish(exarg_T *eap, int reanimate)
                                             eap->cookie))->finished = false;
   }
 
-  // Cleanup (and inactivate) conditionals, but stop when a try conditional
+  // Cleanup (and deactivate) conditionals, but stop when a try conditional
   // not in its finally clause (which then is to be executed next) is found.
   // In this case, make the ":finish" pending for execution at the ":endtry".
   // Otherwise, finish normally.

src/nvim/ex_docmd.c

@@ -97,7 +97,7 @@ static garray_T ucmds = {0, 0, sizeof(ucmd_T), 4, NULL};
 #define USER_CMD(i) (&((ucmd_T *)(ucmds.ga_data))[i])
 #define USER_CMD_GA(gap, i) (&((ucmd_T *)((gap)->ga_data))[i])
 
-/* Wether a command index indicates a user command. */
+// Whether a command index indicates a user command.
 # define IS_USER_CMDIDX(idx) ((int)(idx) < 0)
 
 /* Struct for storing a line inside a while/for loop */
@@ -2956,12 +2956,13 @@ const char * set_one_cmd_context(
     }
   }
 
-  /*
+  //
-   * If the cursor is touching the command, and it ends in an alpha-numeric
+  // If the cursor is touching the command, and it ends in an alphanumeric
-   * character, complete the command name.
+  // character, complete the command name.
-   */
+  //
-  if (*p == NUL && ASCII_ISALNUM(p[-1]))
+  if (*p == NUL && ASCII_ISALNUM(p[-1])) {
     return NULL;
+  }
 
   if (ea.cmdidx == CMD_SIZE) {
     if (*cmd == 's' && vim_strchr((const char_u *)"cgriI", cmd[1]) != NULL) {

src/nvim/ex_eval.c

@@ -210,7 +210,7 @@ bool cause_errthrow(const char_u *mesg, bool severe, bool *ignore)
    * not skipped.  Errors in those commands may affect what of the subsequent
    * commands are regarded part of catch and finally clauses.  Catching the
    * exception would then cause execution of commands not intended by the
-   * user, who wouldn't even get aware of the problem.  Therefor, discard the
+   * user, who wouldn't even get aware of the problem.  Therefore, discard the
    * exception currently being thrown to prevent it from being caught.  Just
    * execute finally clauses and terminate.
    */
@@ -1022,7 +1022,7 @@ void ex_continue(exarg_T *eap)
   else {
     /* Try to find the matching ":while".  This might stop at a try
      * conditional not in its finally clause (which is then to be executed
-     * next).  Therefor, inactivate all conditionals except the ":while"
+     * next).  Therefore, deactivate all conditionals except the ":while"
      * itself (if reached). */
     idx = cleanup_conditionals(cstack, CSF_WHILE | CSF_FOR, FALSE);
     assert(idx >= 0);
@@ -1051,14 +1051,14 @@ void ex_break(exarg_T *eap)
   int idx;
   cstack_T *const cstack = eap->cstack;
 
-  if (cstack->cs_looplevel <= 0 || cstack->cs_idx < 0)
+  if (cstack->cs_looplevel <= 0 || cstack->cs_idx < 0) {
     eap->errmsg = (char_u *)N_("E587: :break without :while or :for");
-  else {
+  } else {
-    /* Inactivate conditionals until the matching ":while" or a try
+    // Deactivate conditionals until the matching ":while" or a try
-     * conditional not in its finally clause (which is then to be
+    // conditional not in its finally clause (which is then to be
-     * executed next) is found.  In the latter case, make the ":break"
+    // executed next) is found.  In the latter case, make the ":break"
-     * pending for execution at the ":endtry". */
+    // pending for execution at the ":endtry". */
-    idx = cleanup_conditionals(cstack, CSF_WHILE | CSF_FOR, TRUE);
+    idx = cleanup_conditionals(cstack, CSF_WHILE | CSF_FOR, true);
     if (idx >= 0 && !(cstack->cs_flags[idx] & (CSF_WHILE | CSF_FOR))) {
       cstack->cs_pending[idx] = CSTP_BREAK;
       report_make_pending(CSTP_BREAK, NULL);
@@ -1179,15 +1179,15 @@ void do_throw(cstack_T *cstack)
   int idx;
   int inactivate_try = FALSE;
 
-  /*
+  //
-   * Cleanup and inactivate up to the next surrounding try conditional that
+  // Cleanup and deactivate up to the next surrounding try conditional that
-   * is not in its finally clause.  Normally, do not inactivate the try
+  // is not in its finally clause.  Normally, do not deactivate the try
-   * conditional itself, so that its ACTIVE flag can be tested below.  But
+  // conditional itself, so that its ACTIVE flag can be tested below.  But
-   * if a previous error or interrupt has not been converted to an exception,
+  // if a previous error or interrupt has not been converted to an exception,
-   * inactivate the try conditional, too, as if the conversion had been done,
+  // deactivate the try conditional, too, as if the conversion had been done,
-   * and reset the did_emsg or got_int flag, so this won't happen again at
+  // and reset the did_emsg or got_int flag, so this won't happen again at
-   * the next surrounding try conditional.
+  // the next surrounding try conditional.
-   */
+  //
 #ifndef THROW_ON_ERROR_TRUE
   if (did_emsg && !THROW_ON_ERROR) {
     inactivate_try = TRUE;

src/nvim/extmark.c

@@ -19,7 +19,7 @@
 // Marks live in namespaces that allow plugins/users to segregate marks
 // from other users.
 //
-// Deleting marks only happens when explicitly calling extmark_del, deleteing
+// Deleting marks only happens when explicitly calling extmark_del, deleting
 // over a range of marks will only move the marks. Deleting on a mark will
 // leave it in same position unless it is on the EOL of a line.
 //

src/nvim/extmark_defs.h

@@ -23,8 +23,8 @@ typedef kvec_t(ExtmarkUndoObject) extmark_undo_vec_t;
 
 typedef enum {
   kExtmarkNOOP,        // Extmarks shouldn't be moved
-  kExtmarkUndo,        // Operation should be reversable/undoable
+  kExtmarkUndo,        // Operation should be reversible/undoable
-  kExtmarkNoUndo,      // Operation should not be reversable
+  kExtmarkNoUndo,      // Operation should not be reversible
   kExtmarkUndoNoRedo,  // Operation should be undoable, but not redoable
 } ExtmarkOp;
 

src/nvim/generators/gen_api_dispatch.lua

@@ -247,7 +247,7 @@ for i = 1, #functions do
             (j - 1)..'].type == kObjectTypeInteger) {')
           output:write('\n    '..converted..' = (Float)args.items['..(j - 1)..'].data.integer;')
         end
-        -- accept empty lua tables as empty dictionarys
+        -- accept empty lua tables as empty dictionaries
         if rt:match('^Dictionary') then
           output:write('\n  } else if (args.items['..(j - 1)..'].type == kObjectTypeArray && args.items['..(j - 1)..'].data.array.size == 0) {') --luacheck: ignore 631
           output:write('\n    '..converted..' = (Dictionary)ARRAY_DICT_INIT;')

src/nvim/getchar.c

@@ -2413,7 +2413,7 @@ static int vgetorpeek(bool advance)
  *	1. a scriptfile
  *	2. the keyboard
  *
- *  As much characters as we can get (upto 'maxlen') are put in "buf" and
+ *  As much characters as we can get (up to 'maxlen') are put in "buf" and
  *  NUL terminated (buffer length must be 'maxlen' + 1).
  *  Minimum for "maxlen" is 3!!!!
  *

src/nvim/globals.h

@@ -141,7 +141,7 @@ EXTERN int cmdline_row;
 EXTERN int redraw_cmdline INIT(= false);          // cmdline must be redrawn
 EXTERN int clear_cmdline INIT(= false);           // cmdline must be cleared
 EXTERN int mode_displayed INIT(= false);          // mode is being displayed
-EXTERN int cmdline_star INIT(= false);            // cmdline is crypted
+EXTERN int cmdline_star INIT(= false);            // cmdline is encrypted
 EXTERN int redrawing_cmdline INIT(= false);       // cmdline is being redrawn
 EXTERN int cmdline_was_last_drawn INIT(= false);  // cmdline was last drawn
 

src/nvim/grid_defs.h

@@ -86,7 +86,7 @@ struct ScreenGrid {
   int zindex;
 
   // Below is state owned by the compositor. Should generally not be set/read
-  // outside this module, except for specific compatibilty hacks
+  // outside this module, except for specific compatibility hacks
 
   // position of the grid on the composed screen.
   int comp_row;

src/nvim/hardcopy.c

@@ -1767,7 +1767,7 @@ static bool prt_open_resource(struct prt_ps_resource_S *resource)
       break;
 
     case PRT_DSC_ENDCOMMENTS_TYPE:
-      // Wont find title or resource after this comment, stop searching
+      // Won't find title or resource after this comment, stop searching
       seen_all = true;
       break;
 

src/nvim/keymap.h

@@ -9,11 +9,11 @@
  * Any special key code sequences are replaced by these codes.
  */
 
-/*
+//
- * For MSDOS some keys produce codes larger than 0xff. They are split into two
+// For MS-DOS some keys produce codes larger than 0xff. They are split into two
- * chars, the first one is K_NUL.
+// chars, the first one is K_NUL.
- */
+//
-#define K_NUL                   (0xce)  // for MSDOS: special key follows
+#define K_NUL                   (0xce)  // for MS-DOS: special key follows
 
 /*
  * K_SPECIAL is the first byte of a special key code and is always followed by

src/nvim/log.h

@@ -7,7 +7,7 @@
 #include "auto/config.h"
 #include "nvim/macros.h"
 
-// USDT probes. Example invokation:
+// USDT probes. Example invocation:
 //     NVIM_PROBE(nvim_foo_bar, 1, string.data);
 #if defined(HAVE_SYS_SDT_H)
 #include <sys/sdt.h> // NOLINT

src/nvim/lua/executor.c

@@ -144,12 +144,12 @@ static int nlua_stricmp(lua_State *const lstate) FUNC_ATTR_NONNULL_ALL
   return 1;
 }
 
-/// convert byte index to UTF-32 and UTF-16 indicies
+/// convert byte index to UTF-32 and UTF-16 indices
 ///
 /// Expects a string and an optional index. If no index is supplied, the length
 /// of the string is returned.
 ///
-/// Returns two values: the UTF-32 and UTF-16 indicies.
+/// Returns two values: the UTF-32 and UTF-16 indices.
 static int nlua_str_utfindex(lua_State *const lstate) FUNC_ATTR_NONNULL_ALL
 {
   size_t s1_len;
@@ -173,7 +173,7 @@ static int nlua_str_utfindex(lua_State *const lstate) FUNC_ATTR_NONNULL_ALL
   return 2;
 }
 
-/// convert UTF-32 or UTF-16 indicies to byte index.
+/// convert UTF-32 or UTF-16 indices to byte index.
 ///
 /// Expects up to three args: string, index and use_utf16.
 /// If use_utf16 is not supplied it defaults to false (use UTF-32)
@@ -234,7 +234,7 @@ static int nlua_luv_cfpcall(lua_State *lstate, int nargs, int nresult,
 
     multiqueue_put(main_loop.events, nlua_luv_error_event,
                    1, xstrdup(error));
-    lua_pop(lstate, 1);  // error mesage
+    lua_pop(lstate, 1);  // error message
     retval = -status;
   } else {  // LUA_OK
     if (nresult == LUA_MULTRET) {
@@ -585,7 +585,7 @@ static lua_State *global_lstate = NULL;
 
 /// Enter lua interpreter
 ///
-/// Calls nlua_init() if needed. Is responsible for pre-lua call initalization
+/// Calls nlua_init() if needed. Is responsible for pre-lua call initialization
 /// like updating `package.[c]path` with directories derived from &runtimepath.
 ///
 /// @return Interpreter instance to use. Will either be initialized now or

src/nvim/lua/treesitter.c

@@ -384,7 +384,7 @@ static int parser_parse(lua_State *L)
   // Sometimes parsing fails (timeout, or wrong parser ABI)
   // In those case, just return an error.
   if (!new_tree) {
-    return luaL_error(L, "An error occured when parsing.");
+    return luaL_error(L, "An error occurred when parsing.");
   }
 
   // The new tree will be pushed to the stack, without copy, owwership is now to

src/nvim/mark.c

@@ -108,7 +108,7 @@ int setmark_pos(int c, pos_T *pos, int fnum)
     return OK;
   }
 
-  // Can't set a mark in a non-existant buffer.
+  // Can't set a mark in a non-existent buffer.
   buf_T *buf = buflist_findnr(fnum);
   if (buf == NULL) {
     return FAIL;

src/nvim/marktree.h

@@ -49,7 +49,7 @@ struct mtnode_s {
   int32_t n;
   int32_t level;
   // TODO(bfredl): we could consider having a only-sometimes-valid
-  // index into parent for faster "chached" lookup.
+  // index into parent for faster "cached" lookup.
   mtnode_t *parent;
   mtkey_t key[2 * MT_BRANCH_FACTOR - 1];
   mtnode_t *ptr[];

src/nvim/memline.c

@@ -118,15 +118,15 @@ struct pointer_block {
  * etc. Thus the order of the lines is the opposite of the line number.
  */
 struct data_block {
-  uint16_t db_id;               /* ID for data block: DATA_ID */
+  uint16_t db_id;               // ID for data block: DATA_ID
-  unsigned db_free;             /* free space available */
+  unsigned db_free;             // free space available
-  unsigned db_txt_start;        /* byte where text starts */
+  unsigned db_txt_start;        // byte where text starts
-  unsigned db_txt_end;          /* byte just after data block */
+  unsigned db_txt_end;          // byte just after data block
-  linenr_T db_line_count;       /* number of lines in this block */
+  linenr_T db_line_count;       // number of lines in this block
-  unsigned db_index[1];         /* index for start of line (actually bigger)
+  unsigned db_index[1];         // index for start of line (actually bigger)
-                                 * followed by empty space upto db_txt_start
+                                // followed by empty space up to db_txt_start
-                                 * followed by the text in the lines until
+                                // followed by the text in the lines until
-                                 * end of page */
+                                // end of page
 };
 
 /*

src/nvim/menu.c

@@ -955,7 +955,7 @@ char_u *set_context_in_menu_cmd(expand_T *xp, const char *cmd, char_u *arg,
       after_dot = p + 1;
   }
 
-  // ":popup" only uses menues, not entries
+  // ":popup" only uses menus, not entries
   expand_menus = !((*cmd == 't' && cmd[1] == 'e') || *cmd == 'p');
   expand_emenu = (*cmd == 'e');
   if (expand_menus && ascii_iswhite(*p)) {

src/nvim/normal.c

@@ -6554,9 +6554,9 @@ static void n_start_visual_mode(int c)
   VIsual_mode = c;
   VIsual_active = true;
   VIsual_reselect = true;
-  /* Corner case: the 0 position in a tab may change when going into
+  // Corner case: the 0 position in a tab may change when going into
-   * virtualedit.  Recalculate curwin->w_cursor to avoid bad hilighting.
+  // virtualedit.  Recalculate curwin->w_cursor to avoid bad highlighting.
-   */
+  //
   if (c == Ctrl_V && (ve_flags & VE_BLOCK) && gchar_cursor() == TAB) {
     validate_virtcol();
     coladvance(curwin->w_virtcol);

src/nvim/ops.c

@@ -954,7 +954,7 @@ static void set_yreg_additional_data(yankreg_T *reg, dict_T *additional_data)
 
 /*
  * Stuff string "p" into yank register "regname" as a single line (append if
- * uppercase). "p" must have been alloced.
+ * uppercase). "p" must have been allocated.
  *
  * return FAIL for failure, OK otherwise
  */
@@ -1066,7 +1066,7 @@ do_execreg(
     if (reg->y_array == NULL)
       return FAIL;
 
-    // Disallow remaping for ":@r".
+    // Disallow remapping for ":@r".
     int remap = colon ? REMAP_NONE : REMAP_YES;
 
     /*

src/nvim/option.c

@@ -1174,10 +1174,10 @@ int do_set(
         }
       }
 
-      /*
+      //
-       * allow '=' and ':' as MSDOS command.com allows only one
+      // allow '=' and ':' as MS-DOS command.com allows only one
-       * '=' character per "set" command line. grrr. (jw)
+      // '=' character per "set" command line. grrr. (jw)
-       */
+      //
       if (nextchar == '?'
           || (prefix == 1
               && vim_strchr((char_u *)"=:&<", nextchar) == NULL
@@ -2719,7 +2719,7 @@ ambw_end:
                : opt_idx);
     // Update free_oldval now that we have the opt_idx for 'shada', otherwise
     // there would be a disconnect between the check for P_ALLOCED at the start
-    // of the function and the set of P_ALLOCED at the end of the fuction.
+    // of the function and the set of P_ALLOCED at the end of the function.
     free_oldval = (options[opt_idx].flags & P_ALLOCED);
     for (s = p_shada; *s; ) {
       // Check it's a valid character
@@ -5363,7 +5363,7 @@ static int put_setstring(FILE *fd, char *cmd, char *name,
       home_replace(NULL, *valuep, buf, size, false);
 
       // If the option value is longer than MAXPATHL, we need to append
-      // earch comma separated part of the option sperately, so that it
+      // search comma separated part of the option separately, so that it
       // can be expanded when read back.
       if (size >= MAXPATHL && (flags & P_COMMA) != 0
           && vim_strchr(*valuep, ',') != NULL) {

src/nvim/option_defs.h

@@ -740,11 +740,11 @@ EXTERN long p_wd;               // 'writedelay'
 EXTERN int p_force_on;          ///< options that cannot be turned off.
 EXTERN int p_force_off;         ///< options that cannot be turned on.
 
-/*
+//
- * "indir" values for buffer-local opions.
+// "indir" values for buffer-local options.
- * These need to be defined globally, so that the BV_COUNT can be used with
+// These need to be defined globally, so that the BV_COUNT can be used with
- * b_p_scriptID[].
+// b_p_scriptID[].
- */
+//
 enum {
   BV_AI = 0
   , BV_AR

src/nvim/os/fileio.c

@@ -4,7 +4,7 @@
 /// @file fileio.c
 ///
 /// Buffered reading/writing to a file. Unlike fileio.c this is not dealing with
-/// Nvim stuctures for buffer, with autocommands, etc: just fopen/fread/fwrite
+/// Nvim structures for buffer, with autocommands, etc: just fopen/fread/fwrite
 /// replacement.
 
 #include <assert.h>

src/nvim/os/fs.c

@@ -1119,7 +1119,7 @@ uint64_t os_fileinfo_blocksize(const FileInfo *file_info)
 ///
 /// @param path Path to the file.
 /// @param[out] file_info Pointer to a `FileID` to fill in.
-/// @return `true` on sucess, `false` for failure.
+/// @return `true` on success, `false` for failure.
 bool os_fileid(const char *path, FileID *file_id)
   FUNC_ATTR_NONNULL_ALL
 {

src/nvim/os/pty_conpty_win.c

@@ -104,7 +104,7 @@ conpty_t *os_conpty_init(char **in_name, char **out_name,
   HRESULT hr;
   hr = pCreatePseudoConsole(size, in_read, out_write, 0, &conpty_object->pty);
   if (FAILED(hr)) {
-    emsg = "create psudo console failed";
+    emsg = "create pseudo console failed";
     goto failed;
   }
 

src/nvim/path.c

@@ -383,7 +383,7 @@ int path_fnamencmp(const char *const fname1, const char *const fname2,
 ///
 /// @param[in]  fname1  First fname to append to.
 /// @param[in]  len1    Length of fname1.
-/// @param[in]  fname2  Secord part of the file name.
+/// @param[in]  fname2  Second part of the file name.
 /// @param[in]  len2    Length of fname2.
 /// @param[in]  sep     If true and fname1 does not end with a path separator,
 ///                     add a path separator before fname2.

src/nvim/profile.c

@@ -250,7 +250,7 @@ void time_start(const char *message)
     return;
   }
 
-  // intialize the global variables
+  // initialize the global variables
   g_prev_time = g_start_time = profile_start();
 
   fprintf(time_fd, "\n\ntimes in msec\n");

src/nvim/quickfix.c

@@ -2421,7 +2421,7 @@ static qfline_T *get_nth_entry(qf_list_T *qfl, int errornr, int *new_qfidx)
   return qf_ptr;
 }
 
-/// Get a entry specied by 'errornr' and 'dir' from the current
+/// Get a entry specified by 'errornr' and 'dir' from the current
 /// quickfix/location list. 'errornr' specifies the index of the entry and 'dir'
 /// specifies the direction (FORWARD/BACKWARD/FORWARD_FILE/BACKWARD_FILE).
 /// Returns a pointer to the entry and the index of the new entry is stored in
@@ -4807,7 +4807,7 @@ static qfline_T *qf_find_entry_after_pos(
   FUNC_ATTR_NONNULL_ALL
 {
   if (qf_entry_after_pos(qfp, pos, linewise)) {
-    // First entry is after postion 'pos'
+    // First entry is after position 'pos'
     return qfp;
   }
 
@@ -5744,7 +5744,7 @@ static void unload_dummy_buffer(buf_T *buf, char_u *dirname_start)
   }
 }
 
-/// Copy the specified quickfix entry items into a new dict and appened the dict
+/// Copy the specified quickfix entry items into a new dict and append the dict
 /// to 'list'.  Returns OK on success.
 static int get_qfline_items(qfline_T *qfp, list_T *list)
 {
@@ -6000,7 +6000,7 @@ static int qf_getprop_qfidx(qf_info_T *qi, dict_T *what)
   if ((di = tv_dict_find(what, S_LEN("id"))) != NULL) {
     // Look for a list with the specified id
     if (di->di_tv.v_type == VAR_NUMBER) {
-      // For zero, use the current list or the list specifed by 'nr'
+      // For zero, use the current list or the list specified by 'nr'
       if (di->di_tv.vval.v_number != 0) {
         qf_idx = qf_id2nr(qi, (unsigned)di->di_tv.vval.v_number);
       }

src/nvim/screen.c

@@ -2006,7 +2006,7 @@ static int win_line(win_T *wp, linenr_T lnum, int startrow, int endrow,
   char_u      *line;                  // current line
   char_u      *ptr;                   // current position in "line"
   int row;                            // row in the window, excl w_winrow
-  ScreenGrid *grid = &wp->w_grid;     // grid specfic to the window
+  ScreenGrid *grid = &wp->w_grid;     // grid specific to the window
 
   char_u extra[57];                   // sign, line number and 'fdc' must
                                       // fit in here
@@ -2653,7 +2653,7 @@ static int win_line(win_T *wp, linenr_T lnum, int startrow, int endrow,
     off += col;
   }
 
-  // wont highlight after TERM_ATTRS_MAX columns
+  // won't highlight after TERM_ATTRS_MAX columns
   int term_attrs[TERM_ATTRS_MAX] = { 0 };
   if (wp->w_buffer->terminal) {
     terminal_get_line_attributes(wp->w_buffer->terminal, wp, lnum, term_attrs);
@@ -5530,7 +5530,7 @@ static void win_redr_border(win_T *wp)
   }
 }
 
-// Low-level functions to manipulate invidual character cells on the
+// Low-level functions to manipulate individual character cells on the
 // screen grid.
 
 /// Put a ASCII character in a screen cell.
@@ -6837,7 +6837,7 @@ int showmode(void)
     msg_pos_mode();
     attr = HL_ATTR(HLF_CM);                     // Highlight mode
 
-    // When the screen is too narrow to show the entire mode messsage,
+    // When the screen is too narrow to show the entire mode message,
     // avoid scrolling and truncate instead.
     msg_no_more = true;
     int save_lines_left = lines_left;
@@ -6953,7 +6953,7 @@ int showmode(void)
     msg_clr_cmdline();
   }
 
-  // NB: also handles clearing the showmode if it was emtpy or disabled
+  // NB: also handles clearing the showmode if it was empty or disabled
   msg_ext_flush_showmode();
 
   /* In Visual mode the size of the selected area must be redrawn. */

src/nvim/search.c

@@ -4451,7 +4451,7 @@ static void update_search_stat(int dirc, pos_T *pos, pos_T *cursor_pos,
     // Unfortunately, there is no STRNICMP function.
     // XXX: above comment should be "no MB_STRCMP function" ?
     if (!(chgtick == buf_get_changedtick(curbuf)
-          && lastpat != NULL  // supress clang/NULL passed as nonnull parameter
+          && lastpat != NULL  // suppress clang/NULL passed as nonnull parameter
           && STRNICMP(lastpat, spats[last_idx].pat, STRLEN(lastpat)) == 0
           && STRLEN(lastpat) == STRLEN(spats[last_idx].pat)
           && equalpos(lastpos, *cursor_pos)

src/nvim/sign.c

@@ -143,7 +143,7 @@ int sign_group_get_next_signid(buf_T *buf, const char_u *groupname)
     group = HI2SG(hi);
   }
 
-  // Search for the next usuable sign identifier
+  // Search for the next usable sign identifier
   while (!found) {
     if (group == NULL) {
       id = next_sign_id++;    // global group

src/nvim/syntax.c

@@ -6127,7 +6127,7 @@ static const char *highlight_init_dark[] = {
 };
 
 const char *const highlight_init_cmdline[] = {
-  // XXX When modifying a list modify it in both valid and invalid halfs.
+  // XXX When modifying a list modify it in both valid and invalid halves.
   // TODO(ZyX-I): merge valid and invalid groups via a macros.
 
   // NvimInternalError should appear only when highlighter has a bug.

src/nvim/tag.c

@@ -3291,7 +3291,7 @@ static void tagstack_clear(win_T *wp)
 }
 
 // Remove the oldest entry from the tag stack and shift the rest of
-// the entires to free up the top of the stack.
+// the entries to free up the top of the stack.
 static void tagstack_shift(win_T *wp)
 {
   taggy_T *tagstack = wp->w_tagstack;

src/nvim/tui/tui.c

@@ -1025,7 +1025,7 @@ static void tui_mouse_on(UI *ui)
   if (!data->mouse_enabled) {
 #ifdef WIN32
     // Windows versions with vtp(ENABLE_VIRTUAL_TERMINAL_PROCESSING) and
-    // no vti(ENABLE_VIRTUAL_TERMINAL_INPUT) will need to use mouse traking of
+    // no vti(ENABLE_VIRTUAL_TERMINAL_INPUT) will need to use mouse tracking of
     // libuv. For this reason, vtp (vterm) state of libuv is temporarily
     // disabled because the control sequence needs to be processed by libuv
     // instead of Windows vtp.
@@ -1048,7 +1048,7 @@ static void tui_mouse_off(UI *ui)
   if (data->mouse_enabled) {
 #ifdef WIN32
     // Windows versions with vtp(ENABLE_VIRTUAL_TERMINAL_PROCESSING) and
-    // no vti(ENABLE_VIRTUAL_TERMINAL_INPUT) will need to use mouse traking of
+    // no vti(ENABLE_VIRTUAL_TERMINAL_INPUT) will need to use mouse tracking of
     // libuv. For this reason, vtp (vterm) state of libuv is temporarily
     // disabled because the control sequence needs to be processed by libuv
     // instead of Windows vtp.

src/nvim/ui_compositor.c

@@ -214,7 +214,7 @@ void ui_comp_remove_grid(ScreenGrid *grid)
   grid->comp_index = 0;
 
   // recompose the area under the grid
-  // inefficent when being overlapped: only draw up to grid->comp_index
+  // inefficient when being overlapped: only draw up to grid->comp_index
   ui_comp_compose_grid(grid);
 }
 
@@ -594,7 +594,7 @@ static void ui_comp_msg_set_pos(UI *ui, Integer grid, Integer row,
       int first_row = MAX((int)row-(scrolled?1:0), 0);
       compose_area(first_row, Rows-delta, 0, Columns);
     } else {
-      // scroll separator togheter with message text
+      // scroll separator together with message text
       int first_row = MAX((int)row-(msg_was_scrolled?1:0), 0);
       ui_composed_call_grid_scroll(1, first_row, Rows, 0, Columns, delta, 0);
       if (scrolled && !msg_was_scrolled && row > 0) {

src/nvim/vim.h

@@ -270,7 +270,7 @@ enum { FOLD_TEXT_LEN = 51 };  //!< buffer size for get_foldtext()
 /// On some systems case in a file name does not matter, on others it does.
 ///
 /// @note Does not account for maximum name lengths and things like "../dir",
-///       thus it is not 100% accurate. OS may also use different algorythm for
+///       thus it is not 100% accurate. OS may also use different algorithm for
 ///       case-insensitive comparison.
 ///
 /// @param[in]  x  First file name to compare.