patch 8.1.1084: cannot delete a match from another window

Problem:    Cannot delete a match from another window. (Paul Jolly)
Solution:   Add window ID argument to matchdelete(), clearmatches(),
            getmatches() and setmatches(). (Andy Massimino, closes #4178)

runtime/doc/eval.txt

@@ -1,4 +1,4 @@
-*eval.txt*	For Vim version 8.1.  Last change: 2019 Mar 29
+*eval.txt*	For Vim version 8.1.  Last change: 2019 Mar 30
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -625,8 +625,11 @@ Functions that can be used with a Dictionary: >
 
 1.5 Blobs ~
 						*blob* *Blob* *Blobs* *E978*
-A Blob mostly behaves like a |List| of numbers, where the numbers have an
-8-bit value, from 0 to 255.
+A Blob is a binary object.  It can be used to read an image from a file and
+send it over a channel, for example.
+
+A Blob mostly behaves like a |List| of numbers, where each number has the
+value of an 8-bit byte, from 0 to 255.
 
 
 Blob creation ~
@@ -2262,7 +2265,7 @@ ch_status({handle} [, {options}])
 changenr()			Number	current change number
 char2nr({expr} [, {utf8}])	Number	ASCII/UTF8 value of first char in {expr}
 cindent({lnum})			Number	C indent for line {lnum}
-clearmatches()			none	clear all matches
+clearmatches([{win}])		none	clear all matches
 col({expr})			Number	column nr of cursor or mark
 complete({startcol}, {matches}) none	set Insert mode completion
 complete_add({expr})		Number	add completion match
@@ -2356,7 +2359,7 @@ getjumplist([{winnr} [, {tabnr}]])
 getline({lnum})			String	line {lnum} of current buffer
 getline({lnum}, {end})		List	lines {lnum} to {end} of current buffer
 getloclist({nr} [, {what}])	List	list of location list items
-getmatches()			List	list of current matches
+getmatches([{win}])		List	list of current matches
 getpid()			Number	process ID of Vim
 getpos({expr})			List	position of cursor, mark, etc.
 getqflist([{what}])		List	list of quickfix items
@@ -2447,7 +2450,7 @@ matchadd({group}, {pattern} [, {priority} [, {id} [, {dict}]]])
 matchaddpos({group}, {pos} [, {priority} [, {id} [, {dict}]]])
 				Number	highlight positions with {group}
 matcharg({nr})			List	arguments of |:match|
-matchdelete({id})		Number	delete match identified by {id}
+matchdelete({id} [, {win}])	Number	delete match identified by {id}
 matchend({expr}, {pat} [, {start} [, {count}]])
 				Number	position where {pat} ends in {expr}
 matchlist({expr}, {pat} [, {start} [, {count}]])
@@ -2553,7 +2556,7 @@ setfperm({fname}, {mode})	Number	set {fname} file permissions to {mode}
 setline({lnum}, {line})		Number	set line {lnum} to {line}
 setloclist({nr}, {list} [, {action} [, {what}]])
 				Number	modify location list using {list}
-setmatches({list})		Number	restore a list of matches
+setmatches({list} [, {win}])	Number	restore a list of matches
 setpos({expr}, {list})		Number	set the {expr} position to {list}
 setqflist({list} [, {action} [, {what}]])
 				Number	modify quickfix list using {list}
@@ -3444,6 +3447,10 @@ char2nr({expr} [, {utf8}])					*char2nr()*
 <		With {utf8} set to 1, always treat as utf-8 characters.
 		A combining character is a separate character.
 		|nr2char()| does the opposite.
+		To turn a string into a list of character numbers: >
+		    let str = "ABC"
+		    let list = map(split(str, '\zs'), {_, val -> char2nr(val)})
+<		Result: [65, 66, 67]
 
 cindent({lnum})						*cindent()*
 		Get the amount of indent for line {lnum} according the C
@@ -3454,9 +3461,11 @@ cindent({lnum})						*cindent()*
 		feature, -1 is returned.
 		See |C-indenting|.
 
-clearmatches()						*clearmatches()*
+clearmatches([{win}])					*clearmatches()*
 		Clears all matches previously defined for the current window
 		by |matchadd()| and the |:match| commands.
+		If {win} is specified, use the window with this number or
+		window ID instead of the current window.
 
 							*col()*
 col({expr})	The result is a Number, which is the byte index of the column
@@ -5029,7 +5038,7 @@ getloclist({nr} [, {what}])				*getloclist()*
 					|location-list-file-window| for more
 					details.
 
-getmatches()						*getmatches()*
+getmatches([{win}])					*getmatches()*
 		Returns a |List| with all matches previously defined for the
 		current window by |matchadd()| and the |:match| commands.
 		|getmatches()| is useful in combination with |setmatches()|,
@@ -6399,7 +6408,7 @@ matchadd({group}, {pattern} [, {priority} [, {id} [, {dict}]]])
 		Defines a pattern to be highlighted in the current window (a
 		"match").  It will be highlighted with {group}.  Returns an
 		identification number (ID), which can be used to delete the
-		match using |matchdelete()|.
+		match using |matchdelete()|.  The ID is bound to the window.
 		Matching is case sensitive and magic, unless case sensitivity
 		or magicness are explicitly overridden in {pattern}.  The
 		'magic', 'smartcase' and 'ignorecase' options are not used.
@@ -6495,11 +6504,13 @@ matcharg({nr})							*matcharg()*
 		Highlighting matches using the |:match| commands are limited
 		to three matches. |matchadd()| does not have this limitation.
 
-matchdelete({id})			       *matchdelete()* *E802* *E803*
+matchdelete({id} [, {win})		       *matchdelete()* *E802* *E803*
 		Deletes a match with ID {id} previously defined by |matchadd()|
 		or one of the |:match| commands.  Returns 0 if successful,
 		otherwise -1.  See example for |matchadd()|.  All matches can
 		be deleted in one operation by |clearmatches()|.
+		If {win} is specified, use the window with this number or
+		window ID instead of the current window.
 
 matchend({expr}, {pat} [, {start} [, {count}]])			*matchend()*
 		Same as |match()|, but return the index of first character
@@ -6688,6 +6699,10 @@ nr2char({expr} [, {utf8}])				*nr2char()*
 		nr2char(10), because NULs are represented with newline
 		characters.  nr2char(0) is a real NUL and terminates the
 		string, thus results in an empty string.
+		To turn a list of character numbers into a string: >
+		    let list = [65, 66, 67]
+		    let str = join(map(list, {_, val -> nr2char(val)}), '')
+<		Result: "ABC"
 
 or({expr}, {expr})					*or()*
 		Bitwise OR on the two arguments.  The arguments are converted
@@ -7906,11 +7921,13 @@ setloclist({nr}, {list} [, {action} [, {what}]])		*setloclist()*
 		only the items listed in {what} are set. Refer to |setqflist()|
 		for the list of supported keys in {what}.
 
-setmatches({list})					*setmatches()*
+setmatches({list} [, {win}])				*setmatches()*
 		Restores a list of matches saved by |getmatches() for the
 		current window|.  Returns 0 if successful, otherwise -1.  All
 		current matches are cleared before the list is restored.  See
 		example for |getmatches()|.
+		If {win} is specified, use the window with this number or
+		window ID instead of the current window.
 
 							*setpos()*
 setpos({expr}, {list})