vim-patch:9.1.0908: not possible to configure :messages (#31492)

Problem:  not possible to configure :messages
Solution: add the 'messagesopt' option (Shougo Matsushita)

closes: vim/vim#16068

https://github.com/vim/vim/commit/51d4d84d6a7159c6ce9e04b36f8edc105ca3794b

Co-authored-by: Shougo Matsushita <Shougo.Matsu@gmail.com>
Co-authored-by: h_east <h.east.727@gmail.com>

5 files changed, 49 insertions, 23 deletions

diff --git a/runtime/doc/message.txt b/runtime/doc/message.txt
index ac151811c2..d6f5aeb354 100644
--- a/runtime/doc/message.txt
+++ b/runtime/doc/message.txt
@@ -27,7 +27,7 @@ depends on the 'shortmess' option.
 				Clear messages, keeping only the {count} most
 				recent ones.
 
-The number of remembered messages is fixed at 200.
+The number of remembered messages is determined by the 'messagesopt' option.
 
 								*g<*
 The "g<" command can be used to see the last page of previous command output.
@@ -789,6 +789,7 @@ If you accidentally hit <Enter> or <Space> and you want to see the displayed
 text then use |g<|.  This only works when 'more' is set.
 
 To reduce the number of hit-enter prompts:
+- Set 'messagesopt'.
 - Set 'cmdheight' to 2 or higher.
 - Add flags to 'shortmess'.
 - Reset 'showcmd' and/or 'ruler'.
diff --git a/runtime/doc/news.txt b/runtime/doc/news.txt
index 3a3e1a8d64..3ce73135ba 100644
--- a/runtime/doc/news.txt
+++ b/runtime/doc/news.txt
@@ -25,6 +25,7 @@ EXPERIMENTS
 OPTIONS
 
 • 'jumpoptions' flag "unload" has been renamed to "clean".
+• The `msghistory` option has been removed in favor of 'messagesopt'.
 
 ==============================================================================
 BREAKING CHANGES                                                *news-breaking*
@@ -248,7 +249,7 @@ LUA
 OPTIONS
 
 • 'completeopt' flag "fuzzy" enables |fuzzy-matching| during |ins-completion|.
-• 'msghistory' controls maximum number of messages to remember.
+• 'messagesopt' configures |:messages| and |hit-enter| prompt.
 • 'tabclose' controls which tab page to focus when closing a tab page.
 
 PERFORMANCE
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 9782846be5..0db7b0f03c 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -3197,7 +3197,7 @@ A jump table for the options with a short description can be found at |Q_op|.
 			global
 	A history of ":" commands, and a history of previous search patterns
 	is remembered.  This option decides how many entries may be stored in
-	each of these histories (see |cmdline-editing| and 'msghistory' for
+	each of these histories (see |cmdline-editing| and 'messagesopt' for
 	the number of messages to remember).
 	The maximum value is 10000.
 
@@ -4045,6 +4045,25 @@ A jump table for the options with a short description can be found at |Q_op|.
 	generated from a list of items, e.g., the Buffers menu.  Changing this
 	option has no direct effect, the menu must be refreshed first.
 
+						*'messagesopt'* *'mopt'*
+'messagesopt' 'mopt'	string	(default "hit-enter,history:500")
+			global
+	Option settings when outputting messages.  It can consist of the
+	following items.  Items must be separated by a comma.
+
+	hit-enter	Use |hit-enter| prompt when the message is longer than
+			'cmdheight' size.
+
+	wait:{n}	Ignored when "hit-enter" is present.  Instead of using
+			|hit-enter| prompt, will simply wait for {n}
+			milliseconds so the user has a chance to read the
+			message, use 0 to disable sleep (but then the user may
+			miss an important message).
+
+	history:{n}	Determines how many entries are remembered in the
+			|:messages| history.  The maximum value is 10000.
+			Setting it to zero clears the message history.
+
 						*'mkspellmem'* *'msm'*
 'mkspellmem' 'msm'	string	(default "460000,2000,500")
 			global
@@ -4290,13 +4309,6 @@ A jump table for the options with a short description can be found at |Q_op|.
 	Defines the maximum time in msec between two mouse clicks for the
 	second click to be recognized as a multi click.
 
-						*'msghistory'* *'mhi'*
-'msghistory' 'mhi'	number	(default 500)
-			global
-	Determines how many entries are remembered in the |:messages| history.
-	The maximum value is 10000.
-	Setting it to zero clears the message history.
-
 						*'nrformats'* *'nf'*
 'nrformats' 'nf'	string	(default "bin,hex")
 			local to buffer
diff --git a/runtime/lua/vim/_meta/options.lua b/runtime/lua/vim/_meta/options.lua
index 01d5235d94..59d270e640 100644
--- a/runtime/lua/vim/_meta/options.lua
+++ b/runtime/lua/vim/_meta/options.lua
@@ -3016,7 +3016,7 @@ vim.go.hid = vim.go.hidden
 
 --- A history of ":" commands, and a history of previous search patterns
 --- is remembered.  This option decides how many entries may be stored in
---- each of these histories (see `cmdline-editing` and 'msghistory' for
+--- each of these histories (see `cmdline-editing` and 'messagesopt' for
 --- the number of messages to remember).
 --- The maximum value is 10000.
 ---
@@ -4084,6 +4084,28 @@ vim.o.mis = vim.o.menuitems
 vim.go.menuitems = vim.o.menuitems
 vim.go.mis = vim.go.menuitems
 
+--- Option settings when outputting messages.  It can consist of the
+--- following items.  Items must be separated by a comma.
+---
+--- hit-enter	Use `hit-enter` prompt when the message is longer than
+--- 		'cmdheight' size.
+---
+--- wait:{n}	Ignored when "hit-enter" is present.  Instead of using
+--- 		`hit-enter` prompt, will simply wait for {n}
+--- 		milliseconds so the user has a chance to read the
+--- 		message, use 0 to disable sleep (but then the user may
+--- 		miss an important message).
+---
+--- history:{n}	Determines how many entries are remembered in the
+--- 		`:messages` history.  The maximum value is 10000.
+--- 		Setting it to zero clears the message history.
+---
+--- @type string
+vim.o.messagesopt = "hit-enter,history:500"
+vim.o.mopt = vim.o.messagesopt
+vim.go.messagesopt = vim.o.messagesopt
+vim.go.mopt = vim.go.messagesopt
+
 --- Parameters for `:mkspell`.  This tunes when to start compressing the
 --- word tree.  Compression can be slow when there are many words, but
 --- it's needed to avoid running out of memory.  The amount of memory used
@@ -4379,16 +4401,6 @@ vim.o.mouset = vim.o.mousetime
 vim.go.mousetime = vim.o.mousetime
 vim.go.mouset = vim.go.mousetime
 
---- Determines how many entries are remembered in the `:messages` history.
---- The maximum value is 10000.
---- Setting it to zero clears the message history.
----
---- @type integer
-vim.o.msghistory = 500
-vim.o.mhi = vim.o.msghistory
-vim.go.msghistory = vim.o.msghistory
-vim.go.mhi = vim.go.msghistory
-
 --- This defines what bases Vim will consider for numbers when using the
 --- CTRL-A and CTRL-X commands for adding to and subtracting from a number
 --- respectively; see `CTRL-A` for more info on these commands.
diff --git a/runtime/optwin.vim b/runtime/optwin.vim
index 48a4bd2816..923f55f8fa 100644
--- a/runtime/optwin.vim
+++ b/runtime/optwin.vim
@@ -626,8 +626,8 @@ call <SID>AddOption("terse", gettext("add 's' flag in 'shortmess' (don't show se
 call <SID>BinOptionG("terse", &terse)
 call <SID>AddOption("shortmess", gettext("list of flags to make messages shorter"))
 call <SID>OptionG("shm", &shm)
-call <SID>AddOption("msghistory", gettext("how many messages are remembered"))
-call append("$", " \tset mhi=" . &mhi)
+call <SID>AddOption("messagesopt", gettext("Option settings when outputting messages"))
+call <SID>OptionG("mopt", &mopt)
 call <SID>AddOption("showcmd", gettext("show (partial) command keys in location given by 'showcmdloc'"))
 let &sc = s:old_sc
 call <SID>BinOptionG("sc", &sc)