Update runtime files

runtime/doc/insert.txt

@@ -1,4 +1,4 @@
-*insert.txt*    For Vim version 8.2.  Last change: 2021 Oct 18
+*insert.txt*    For Vim version 8.2.  Last change: 2021 Oct 24
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -871,31 +871,27 @@ invoked and what it should return.
 Here is an example that uses the "aiksaurus" command (provided by Magnus
 Groß): >
 
-	func Thesaur(findstart, base)
-	    if a:findstart
-		let line = getline('.')
-		let start = col('.') - 1
-		while start > 0 && line[start - 1] =~ '\a'
-		   let start -= 1
-		endwhile
-		return start
-	    else
-		let res = []
-		let h = ''
-		for l in split(system('aiksaurus '.shellescape(a:base)), '\n')
-		    if l[:3] == '=== '
-		    	let h = substitute(l[4:], ' =*$', '', '')
-		    elseif l[0] =~ '\a'
-			call extend(res, map(split(l, ', '), {_, val -> {'word': val, 'menu': '('.h.')'}}))
-		    endif
-		endfor
-		return res
-	    endif
-	endfunc
-
-	if exists('+thesaurusfunc')
-	    set thesaurusfunc=Thesaur
+    func Thesaur(findstart, base)
+      if a:findstart
+    	return searchpos('\<', 'bnW', line('.'))[1] - 1
+      endif
+      let res = []
+      let h = ''
+      for l in systemlist('aiksaurus '.shellescape(a:base))
+	if l[:3] == '=== '
+	  let h = '('.substitute(l[4:], ' =*$', ')', '')
+	elseif l ==# 'Alphabetically similar known words are: '
+	  let h = "\U0001f52e"
+	elseif l[0] =~ '\a' || (h ==# "\U0001f52e" && l[0] ==# "\t")
+	  call extend(res, map(split(substitute(l, '^\t', '', ''), ', '), {_, val -> {'word': val, 'menu': h}}))
 	endif
+      endfor
+      return res
+    endfunc
+    
+    if exists('+thesaurusfunc')
+      set thesaurusfunc=Thesaur
+    endif
 
 
 Completing keywords in the current and included files	*compl-keyword*