Fix some typos in documentation, C code and test files

closes: #18300

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/doc/diff.txt

@@ -1,4 +1,4 @@
-*diff.txt*      For Vim version 9.1.  Last change: 2025 Aug 06
+*diff.txt*      For Vim version 9.1.  Last change: 2025 Sep 15
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -351,7 +351,7 @@ hard to see what the actual edit on it was.  You can use diff anchors to pin
 that function so the diff algorithm will align based on it.
 
 To use it, set anchors using 'diffanchors' which is a comma-separated list of
-{address} in each file, and then add "anchor" to 'diffopt'.  Internaly, Vim
+{address} in each file, and then add "anchor" to 'diffopt'.  Internally, Vim
 splits each file up into sections split by the anchors.  It performs the diff
 on each pair of sections separately before merging the results back.
 

runtime/doc/helphelp.txt

@@ -1,4 +1,4 @@
-*helphelp.txt*	For Vim version 9.1.  Last change: 2025 Aug 06
+*helphelp.txt*	For Vim version 9.1.  Last change: 2025 Sep 15
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -392,8 +392,8 @@ help file it's best to copy one of the existing files and use it as a
 template.
 
 Vim help files generally use 2 spaces after a sentence (since they are written
-using a fixed-width font and that was the prefered style in the 70s/80s), like
+using a fixed-width font and that was the preferred style in the 70s/80s),
-what is described here: https://english.stackexchange.com/a/2602
+like what is described here: https://english.stackexchange.com/a/2602
 
 The first line in a help file should have the following format:
 

runtime/doc/options.txt

@@ -3044,7 +3044,7 @@ A jump table for the options with a short description can be found at |Q_op|.
 	Each anchor line splits the buffer (the split happens above the
 	anchor), with each part being diff'ed separately before the final
 	result is joined.  When more than one {address} are provided, the
-	anchors will be sorted interally by line number.  If using buffer
+	anchors will be sorted internally by line number.  If using buffer
 	local options, each buffer should have the same number of anchors
 	(extra anchors will be ignored).  This option is only used when
 	'diffopt' has "anchor" set.  See |diff-anchors| for more details and

runtime/doc/terminal.txt

@@ -1,4 +1,4 @@
-*terminal.txt*	For Vim version 9.1.  Last change: 2025 Sep 14
+*terminal.txt*	For Vim version 9.1.  Last change: 2025 Sep 15
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1428,7 +1428,7 @@ gdb:
 		set a temporary breakpoint at the specified position
  *:Clear*	delete the breakpoint at the cursor position
  *:ToggleBreak*	set a breakpoint at the cursor position or delete all
-		breakpoints at the cursor positoin
+		breakpoints at the cursor position
 
  *:Step*	execute the gdb "step" command
  *:Over*	execute the gdb "next" command (`:Next` is a Vim command)

runtime/doc/wayland.txt

@@ -1,4 +1,4 @@
-*wayland.txt*   For Vim version 9.1.  Last change: 2025 Sep 02
+*wayland.txt*   For Vim version 9.1.  Last change: 2025 Sep 15
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -56,7 +56,7 @@ protocols, for accessing the current Wayland selection.  These are the best
 case scenario protocols, see |wayland-focus-steal|.  Selection in this case
 essentially means the "clipboard."  You can check if your Wayland compositor
 supports either of these protocols by running the wayland-info command, which
-should be bunded with libwayland on your system: >
+should be bundled with libwayland on your system: >
 	wayland-info | grep -E '(ext_data_control|zwlr_data_control)'
 <If grep finds a match, then you have either or both protocols on your system.
 If you don't get any match, then please see |wayland-focus-steal| for more

src/insexpand.c

@@ -3451,7 +3451,7 @@ set_cpt_callbacks(optset_T *args)
 	}
     }
 
-    if (!local) // ':set' used insted of ':setlocal'
+    if (!local) // ':set' used instead of ':setlocal'
 	// Cache the callback array
 	if (copy_cpt_callbacks(&cpt_cb, &cpt_cb_count, curbuf->b_p_cpt_cb,
 		    curbuf->b_p_cpt_count) != OK)

src/os_unix.c

@@ -9546,7 +9546,7 @@ socket_server_send(
 	char_u *str,	    // What to send
 	char_u **result,    // Set to result of expr
 	char_u **receiver,  // Full path of "name"
-	int is_expr,	    // Is it an expresison or keystrokes?
+	int is_expr,	    // Is it an expression or keystrokes?
 	int timeout,	    // In milliseconds
 	int silent)	    // Don't complain if socket doesn't exist
 {
@@ -9628,7 +9628,7 @@ socket_server_send(
 	else
 	    vim_free(path);
 
-	// Exit, we aren't waiting for a reponse
+	// Exit, we aren't waiting for a response
 	return 0;
     }
 
@@ -9935,7 +9935,7 @@ socket_server_init_cmd(ss_cmd_T *cmd, ss_cmd_type_T type)
 
 /*
  * Append a message to a command. Note that "len" is the length of contents.
- * Returns OK on sucess and FAIL on failure
+ * Returns OK on success and FAIL on failure
  */
     static int
 socket_server_append_msg(ss_cmd_T *cmd, char_u type, char_u *contents, int len)
@@ -10386,7 +10386,7 @@ socket_server_exec_cmd(ss_cmd_T *cmd, int fd)
 			    STRLEN(result) + 1); // We add +1 in case "result"
 						 // is an empty string.
 		else
-		    // An error occured, return an error msg instead
+		    // An error occurred, return an error msg instead
 		    socket_server_append_msg(&rcmd, SS_MSG_TYPE_STRING,
 			    (char_u *)_(e_invalid_expression_received),
 			    STRLEN(e_invalid_expression_received));
@@ -10563,7 +10563,7 @@ socket_server_dispatch(int timeout)
 }
 
 /*
- * Check if socket "name" is reponsive by sending an ALIVE command. This does
+ * Check if socket "name" is responsive by sending an ALIVE command. This does
  * not require the socket server to be active.
  */
     static int

src/tabpanel.c

@@ -150,7 +150,7 @@ draw_tabpanel(void)
     if (maxwidth == 0)
 	return;
 
-    // Reset got_int to avoid build_stl_str_hl() isn't evaluted.
+    // Reset got_int to avoid build_stl_str_hl() isn't evaluated.
     got_int = FALSE;
 
     if (tpl_is_vert)

src/term.c

@@ -5911,7 +5911,7 @@ handle_osc(char_u *tp, int len, char_u *key_name, int *slen)
 	LOG_TRN("Received OSC response: %s", (char*)tp);
 	// Check if it is a valid OSC sequence, and consume it. OSC format
 	// consists of:
-	// <idenfitifer><data><terminator>
+	// <identifier><data><terminator>
 	// <identifier> is either <Esc>] or an OSC character
 	// <terminator> can be '\007', <Esc>\ or STERM.
 	cur = 1 + (tp[0] == ESC);

src/testdir/test_ins_complete.vim

@@ -5023,7 +5023,7 @@ func Test_nonkeyword_trigger()
   call assert_equal('a#', getline('.'))
   set completeopt&
 
-  " Test 2: Filter nonkeyword and keyword matches with differet startpos
+  " Test 2: Filter nonkeyword and keyword matches with different startpos
   set completeopt+=menuone,noselect
   call feedkeys("S#a\<C-N>b\<F2>\<F3>\<Esc>0", 'tx!')
   call assert_equal(['abc', 'abcd', '#abar'], b:matches->mapnew('v:val.word'))
@@ -5144,7 +5144,7 @@ func Test_autocomplete_trigger()
   call assert_equal(2, g:CallCount)
   call assert_equal('a#', getline('.'))
 
-  " Test 2: Filter nonkeyword and keyword matches with differet startpos
+  " Test 2: Filter nonkeyword and keyword matches with different startpos
   for fuzzy in range(2)
     if fuzzy
       set completeopt+=fuzzy

src/testdir/test_vim9_class.vim

@@ -12518,7 +12518,7 @@ def Test_super_keyword()
   END
   v9.CheckSourceFailure(lines, 'E1326: Variable "foo" not found in object "B"')
 
-  # Using super to access an overriden method in the parent class
+  # Using super to access an overridden method in the parent class
   lines =<< trim END
     vim9script
 

src/testdir/test_wayland.vim

@@ -137,7 +137,7 @@ func Test_wayland_wlrestore()
 
   call assert_equal('2', getreg('+'))
 
-  " Check if wlrestore doesn't disconnect the display if not nessecary by seeing
+  " Check if wlrestore doesn't disconnect the display if not necessary by seeing
   " if Vim doesn't lose the selection
   call setreg('+', 'testing', 'c')
 
@@ -209,7 +209,7 @@ func Test_wayland_paste()
 
   bw!
 
-  " Check behaviour when selecton is cleared (empty)
+  " Check behaviour when selection is cleared (empty)
   call system('wl-copy --clear')
   call assert_fails('put +', 'E353:')
 endfunc

src/testdir/test_xxd.vim

@@ -702,7 +702,7 @@ func Test_xxd_overflow()
   bw!
 endfunc
 
-" this caused a NULL derefence
+" this caused a NULL dereference
 func Test_xxd_null_dereference()
   CheckUnix
   CheckExecutable /bin/true

src/wayland.c

@@ -30,7 +30,7 @@ typedef struct {
     struct wl_seat  *proxy;
     char	    *label;	    // Name of seat as text (e.g. seat0,
 				    // seat1...).
-    uint32_t	    capabilities;   // Bitmask of the capabilites of the seat
+    uint32_t	    capabilities;   // Bitmask of the capabilities of the seat
 				    // (pointer, keyboard, touch).
 } vwl_seat_T;
 
@@ -618,7 +618,7 @@ vwl_log_handler(const char *fmt, va_list args)
 /*
  * Connect to the display with name; passing NULL will use libwayland's way of
  * getting the display. Additionally get the registry object but will not
- * starting listening. Returns OK on sucess and FAIL on failure.
+ * starting listening. Returns OK on success and FAIL on failure.
  */
     static int
 vwl_connect_display(const char *display)
@@ -2275,7 +2275,7 @@ wayland_cb_own_selection(
 	    // better to do it this way. Additionally other Wayland applications
 	    // seem to set the selection every time.
 	    //
-	    // There should be no noticable performance change since its not
+	    // There should be no noticeable performance change since its not
 	    // like this is running in the background constantly in Vim, only
 	    // runs once when the user yanks text to the system clipboard.
 	    vwl_data_source_destroy(&clip_sel->source, FALSE);