patch 8.2.4825: can only get a list of mappings

Problem:    Can only get a list of mappings.
Solution:   Add the optional {abbr} argument. (Ernie Rael, closes #10277)
            Rename to maplist().  Rename test file.

runtime/doc/builtin.txt

@@ -235,7 +235,6 @@ getline({lnum})			String	line {lnum} of current buffer
 getline({lnum}, {end})		List	lines {lnum} to {end} of current buffer
 getloclist({nr})		List	list of location list items
 getloclist({nr}, {what})	Dict	get specific location list properties
-getmappings()			List	list of all mappings, a dict for each
 getmarklist([{buf}])		List	list of global/local marks
 getmatches([{win}])		List	list of current matches
 getmousepos()			Dict	last known mouse position
@@ -338,6 +337,7 @@ maparg({name} [, {mode} [, {abbr} [, {dict}]]])
 					rhs of mapping {name} in mode {mode}
 mapcheck({name} [, {mode} [, {abbr}]])
 				String	check for mappings matching {name}
+maplist([{abbr}])		List	list of all mappings, a dict for each
 mapnew({expr1}, {expr2})	List/Dict/Blob/String
 					like |map()| but creates a new List or
 					Dictionary
@@ -3571,17 +3571,6 @@ getloclist({nr} [, {what}])				*getloclist()*
 			:echo getloclist(5, {'filewinid': 0})
 
 
-getmappings()						*getmappings()*
-		Returns a |List| of all mappings.  Each List item is a |Dict|,
-		the same as what is returned by |maparg()|, see
-		|mapping-dict|.
-
-		Example to show all mappings with 'MultiMatch' in rhs: >
-			vim9script
-			echo getmappings()->filter(
-				(_, m) => match(m.rhs, 'MultiMatch') >= 0)
-
-
 getmarklist([{buf}])					*getmarklist()*
 		Without the {buf} argument returns a |List| with information
 		about all the global marks. |mark|
@@ -5247,7 +5236,8 @@ maparg({name} [, {mode} [, {abbr} [, {dict}]]])			*maparg()*
 		When {dict} is omitted or zero: Return the rhs of mapping
 		{name} in mode {mode}.  The returned String has special
 		characters translated like in the output of the ":map" command
-		listing.
+		listing. When {dict} is TRUE a dictionary is returned, see
+		below. To get a list of all mappings see |maplist()|.
 
 		When there is no mapping for {name}, an empty String is
 		returned.  When the mapping for {name} is empty, then "<Nop>"
@@ -5348,6 +5338,18 @@ mapcheck({name} [, {mode} [, {abbr}]])			*mapcheck()*
 			GetKey()->mapcheck('n')
 
 
+maplist([{abbr}])					*maplist()*
+		Returns a |List| of all mappings.  Each List item is a |Dict|,
+		the same as what is returned by |maparg()|, see
+		|mapping-dict|.  When {abbr} is there and it is |TRUE| use
+		abbreviations instead of mappings.
+
+		Example to show all mappings with 'MultiMatch' in rhs: >
+			vim9script
+			echo maplist()->filter(
+				(_, m) => match(m.rhs, 'MultiMatch') >= 0)
+
+
 mapnew({expr1}, {expr2})					*mapnew()*
 		Like |map()| but instead of replacing items in {expr1} a new
 		List or Dictionary is created and returned.  {expr1} remains

runtime/doc/usr_41.txt

@@ -1089,10 +1089,10 @@ Mappings and Menus:			    *mapping-functions*
 	digraph_getlist()	get all |digraph|s
 	digraph_set()		register |digraph|
 	digraph_setlist()	register multiple |digraph|s
-	getmappings()		get list of all mappings
 	hasmapto()		check if a mapping exists
 	mapcheck()		check if a matching mapping exists
 	maparg()		get rhs of a mapping
+	maplist()		get list of all mappings
 	mapset()		restore a mapping
 	menu_info()		get information about a menu item
 	wildmenumode()		check if the wildmode is active