'cpoptions': remove "<" flag; ignore <special>

Closes #6937 "nvim_get_keymap output is unreliable"

runtime/doc/gui.txt

@@ -490,9 +490,6 @@ expression register: >
 
    :amenu Insert.foobar   "='foobar'<CR>P
 
-Note that the '<' and 'k' flags in 'cpoptions' also apply here (when
-included they make the <> form and raw key codes not being recognized).
-
 Note that <Esc> in Cmdline mode executes the command, like in a mapping.  This
 is Vi compatible.  Use CTRL-C to quit Cmdline mode.
 

runtime/doc/map.txt

@@ -570,9 +570,9 @@ Since the '|' character is used to separate a map command from the next
 command, you will have to do something special to include  a '|' in {rhs}.
 There are three methods:
    use	     works when			   example	~
-   <Bar>     '<' is not in 'cpoptions'	   :map _l :!ls <Bar> more^M
+   <Bar>     always			   :map _l :!ls <Bar> more^M
    \|	     'b' is not in 'cpoptions'	   :map _l :!ls \| more^M
-   ^V|	     always, in Vim and Vi	   :map _l :!ls ^V| more^M
+   ^V|	     always			   :map _l :!ls ^V| more^M
 
 (here ^V stands for CTRL-V; to get one CTRL-V you have to type it twice; you
 cannot use the <> notation "<C-V>" here).
@@ -627,8 +627,7 @@ out about, ^D is CTRL-D).
 
 1.8 EXAMPLES						*map-examples*
 
-A few examples (given as you type them, for "<CR>" you type four characters;
-the '<' flag must not be present in 'cpoptions' for this to work). >
+A few examples (as you type them: for "<CR>" you type four characters). >
 
    :map <F3>  o#include
    :map <M-g> /foo<CR>cwbar<Esc>
@@ -880,7 +879,6 @@ character is mostly ignored otherwise.
 
 It is possible to move the cursor after an abbreviation: >
    :iab if if ()<Left>
-This does not work if 'cpoptions' includes the '<' flag. |<>|
 
 You can even do more complicated things.  For example, to consume the space
 typed after an abbreviation: >

runtime/doc/options.txt

@@ -1568,7 +1568,6 @@ A jump table for the options with a short description can be found at |Q_op|.
 			results in X being mapped to:
 				'B' included:	"\^["	 (^[ is a real <Esc>)
 				'B' excluded:	"<Esc>"  (5 characters)
-				('<' excluded in both cases)
 								*cpo-c*
 		c	Searching continues at the end of any match at the
 			cursor position, but not further than the start of the
@@ -1751,14 +1750,6 @@ A jump table for the options with a short description can be found at |Q_op|.
 		+	When included, a ":write file" command will reset the
 			'modified' flag of the buffer, even though the buffer
 			itself may still be different from its file.
-								*cpo-<*
-		<	Disable the recognition of special key codes in |<>|
-			form in mappings, abbreviations, and the "to" part of
-			menu commands.  For example, the command
-			":map X <Tab>" results in X being mapped to:
-				'<' included:	"<Tab>"  (5 characters)
-				'<' excluded:	"^I"	 (^I is a real <Tab>)
-			Also see the 'k' flag above.
 								*cpo->*
 		>	When appending to a register, put a line break before
 			the appended text.

runtime/doc/tips.txt

@@ -282,9 +282,7 @@ For Emacs-style editing on the command-line: >
 	:cnoremap <Esc><C-B>	<S-Left>
 	" forward one word
 	:cnoremap <Esc><C-F>	<S-Right>
-
-NOTE: This requires that the '<' flag is excluded from 'cpoptions'. |<>|
-
+<
 							*format-bullet-list*
 This mapping will format any bullet list.  It requires that there is an empty
 line above and below each list entry.  The expression commands are used to
@@ -300,8 +298,7 @@ be able to give comments to the parts of the mapping. >
 	:execute m			      |" define the mapping
 
 (<> notation |<>|.  Note that this is all typed literally.  ^W is "^" "W", not
-CTRL-W.  You can copy/paste this into Vim if '<' is not included in
-'cpoptions'.)
+CTRL-W.)
 
 Note that the last comment starts with |", because the ":execute" command
 doesn't accept a comment directly.

runtime/doc/vim_diff.txt

@@ -332,7 +332,7 @@ Test functions:
 
 Other options:
   'antialias'
-  'cpoptions' (g j k H w * - and all POSIX flags were removed)
+  'cpoptions' (g j k H w < * - and all POSIX flags were removed)
   'encoding' ("utf-8" is always used)
   'esckeys'
   'guioptions' "t" flag was removed

runtime/doc/visual.txt

@@ -271,7 +271,7 @@ mode.  For example, if you would like the "/" command not to extend the Visual
 area, but instead take the highlighted text and search for that: >
 	:vmap / y/<C-R>"<CR>
 (In the <> notation |<>|, when typing it you should type it literally; you
-need to remove the 'B' and '<' flags from 'cpoptions'.)
+need to remove the 'B' flag from 'cpoptions'.)
 
 If you want to give a register name using the """ command, do this just before
 typing the operator character: "v{move-around}"xd".
@@ -375,7 +375,7 @@ Here is an example, to replace the selected text with the output of "date": >
 	:vmap _a <Esc>`>a<CR><Esc>`<i<CR><Esc>!!date<CR>kJJ
 
 (In the <> notation |<>|, when typing it you should type it literally; you
-need to remove the 'B' and '<' flags from 'cpoptions')
+need to remove the 'B' flag from 'cpoptions')
 
 What this does is:
 <Esc>		stop Visual mode
@@ -392,7 +392,7 @@ selected text: >
 	:vmap X y/<C-R>"<CR>
 
 (In the <> notation |<>|, when typing it you should type it literally; you
-need to remove the 'B' and '<' flags from 'cpoptions')
+need to remove the 'B' flag from 'cpoptions')
 
 Note that special characters (like '.' and '*') will cause problems.