Removes shelltype option and all revelant doc. #1249

Fixes #1240

runtime/doc/change.txt

@@ -506,9 +506,9 @@ some text through a filter, so that it is replaced by the filter output.
 Examples of filters are "sort", which sorts lines alphabetically, and
 "indent", which formats C program files (you need a version of indent that
 works like a filter; not all versions do).  The 'shell' option specifies the
-shell Vim uses to execute the filter command (See also the 'shelltype'
-option).  You can repeat filter commands with ".".  Vim does not recognize a
-comment (starting with '"') after the `:!` command.
+shell Vim uses to execute the filter command.  You can repeat filter commands
+with ".".  Vim does not recognize a comment (starting with '"') after the
+`:!` command.
 
 							*!*
 !{motion}{filter}	Filter {motion} text lines through the external

runtime/doc/options.txt

@@ -6025,7 +6025,7 @@ A jump table for the options with a short description can be found at |Q_op|.
 					"cmd.exe", OS/2: "cmd")
 			global
 	Name of the shell to use for ! and :! commands.  When changing the
-	value also check these options: 'shelltype', 'shellpipe', 'shellslash'
+	value also check these options: 'shellpipe', 'shellslash'
 	'shellredir', 'shellquote', 'shellxquote' and 'shellcmdflag'.
 	It is allowed to give an argument to the command, e.g.  "csh -f".
 	See |option-backslash| about including spaces and backslashes.
@@ -6179,20 +6179,6 @@ A jump table for the options with a short description can be found at |Q_op|.
 	|FilterWritePost| autocommands event are not triggered when
 	'shelltemp' is off.
 
-						*'shelltype'* *'st'*
-'shelltype' 'st'	number	(default 0)
-			global
-			{not in Vi} {only for the Amiga}
-	On the Amiga this option influences the way how the commands work
-	which use a shell.
-	0 and 1: always use the shell
-	2 and 3: use the shell only to filter lines
-	4 and 5: use shell only for ':sh' command
-	When not using the shell, the command is executed directly.
-
-	0 and 2: use "shell 'shellcmdflag' cmd" to start external commands
-	1 and 3: use "shell cmd" to start external commands
-
 						*'shellxescape'* *'sxe'*
 'shellxescape' 'sxe'	string	(default: "";
 				 for MS-DOS and MS-Windows: "\"&|<>()@^")

runtime/doc/quickref.txt

@@ -856,7 +856,6 @@ Short explanation of each option:		*option-list*
 'shellredir'	  'srr'     string to put output of filter in a temp file
 'shellslash'	  'ssl'     use forward slash for shell file names
 'shelltemp'	  'stmp'    whether to use a temp file for shell commands
-'shelltype'	  'st'	    Amiga: influences how to use a shell
 'shellxescape'	  'sxe'     characters to escape when 'shellxquote' is (
 'shellxquote'	  'sxq'     like 'shellquote', but include redirection
 'shiftround'	  'sr'	    round indent to multiple of shiftwidth

runtime/doc/usr_10.txt

@@ -747,7 +747,6 @@ check the values of these options:
 	'shellcmdflag'	argument to pass a command to the shell
 	'shellquote'	quote to be used around the command
 	'shellxquote'	quote to be used around the command and redirection
-	'shelltype'	kind of shell (only for the Amiga)
 	'shellslash'	use forward slashes in the command (only for
 			MS-Windows and alikes)
 	'shellredir'	string used to write the command output into a file

runtime/doc/various.txt

@@ -232,8 +232,7 @@ g8			Print the hex values of the bytes used in the
 			mode.
 
 							*:!cmd* *:!* *E34*
-:!{cmd}			Execute {cmd} with the shell.  See also the 'shell'
-			and 'shelltype' option.
+:!{cmd}			Execute {cmd} with the shell. See also 'shell'.
 
 			Any '!' in {cmd} is replaced with the previous
 			external command (see also 'cpoptions').  But not when

runtime/doc/vi_diff.txt

@@ -620,9 +620,6 @@ all currently set marks.  The commands "']" and "`]" jump to the end of the
 previous operator or end of the text inserted with the put command.  "'[" and
 "`[" do jump to the start.
 
-The 'shelltype' option can be set to reflect the type of shell used on the
-Amiga.
-
 The 'highlight' option can be set for the highlight mode to be used for
 several commands.
 

runtime/optwin.vim

@@ -1062,10 +1062,6 @@ call <SID>OptionG("udir", &udir)
 call <SID>Header("executing external commands")
 call append("$", "shell\tname of the shell program used for external commands")
 call <SID>OptionG("sh", &sh)
-if has("amiga")
-  call append("$", "shelltype\twhen to use the shell or directly execute a command")
-  call append("$", " \tset st=" . &st)
-endif
 call append("$", "shellquote\tcharacter(s) to enclose a shell command in")
 call <SID>OptionG("shq", &shq)
 call append("$", "shellxquote\tlike 'shellquote' but include the redirection")

runtime/syntax/vim.vim

@@ -33,7 +33,7 @@ syn keyword vimOption contained	akm anti arshape awa backupskip bex bioskey brow
 syn keyword vimOption contained	al antialias autochdir background balloondelay bexpr bk bs casemap cf cink cmdheight colorcolumn completefunc copyindent cryptmethod cscopeverbose csverb debug dict dir eb enc errorbells expandtab fdl fenc fileencodings fkmap foldenable foldminlines formatprg gdefault gp guifontset helpfile hidden hl ignorecase imcmdline imsf indentexpr is isp keywordprg lazyredraw lispwords ls makeef maxmapdepth mfd mmd modified mousemodel msm numberwidth operatorfunc pastetoggle pexpr pmbfn printexpr pt re restorescreen rnu rulerformat scr sect sft shellredir shiftwidth showmatch siso smc spc spl ss statusline suffixesadd sws tabline tags tbs textmode timeoutlen to tsl ttyfast uc undoreload vdir viewoptions warn wfh wig wildmode winfixwidth wiw wrap writedelay
 syn keyword vimOption contained	aleph ar autoindent backspace ballooneval bg bkc bsdir cb cfu cinkeys cmdwinheight columns completeopt cot cscopepathcomp cspc cuc deco dictionary directory ed encoding errorfile exrc fdls fencs fileformat flp foldexpr foldnestmax fp gfm grepformat guifontwide helpheight highlight hlg im imd imstatusfunc indentkeys isf isprint km lbr list lsp makeprg maxmem mh mmp more mouses mzq nuw opfunc patchexpr pfn popt printfont pumheight readonly revins ro runtimepath scroll sections sh shellslash shm showmode sj smd spell splitbelow ssl stl sw sxe tabpagemax tagstack tenc textwidth title toolbar tsr ttym udf updatecount ve viminfo wb wfw wildchar wildoptions winheight wm wrapmargin ws
 syn keyword vimOption contained	allowrevins arab autoread backup balloonexpr bh bl bsk cc ch cino cmp com concealcursor cp cscopeprg csprg cul def diff display edcompatible endofline errorformat fcl fdm fex fileformats fml foldignore foldopen fs gfn grepprg guiheadroom helplang history hls imactivatefunc imdisable inc indk isfname joinspaces kmp lcs listchars lw mat maxmempattern mis mmt mouse mouseshape mzquantum odev osfiletype patchmode ph preserveindent printheader pvh redrawtime ri rs sb scrollbind secure shcf shelltemp shortmess showtabline slm sn spellcapcheck splitright ssop stmp swapfile sxq tabstop tal term tf titlelen toolbariconsize ttimeout ttymouse udir updatetime verbose virtualedit wc wh wildcharm wim winminheight wmh wrapscan ww
-syn keyword vimOption contained	altkeymap arabic autowrite backupcopy bdir bin bomb bt ccv charconvert cinoptions cms comments conceallevel cpo cscopequickfix csqf cursorbind define diffexpr dy ef eol esckeys fcs fdn ff fileignorecase fmr foldlevel foldtext fsync gfs gtl guioptions hf hk hlsearch imactivatekey imi include inex isi js kp linebreak lm lz matchpairs maxmemtot mkspellmem mod mousef mouset nf oft pa path pheader previewheight printmbcharset pvw regexpengine rightleft rtp sbo scrolljump sel shell shelltype shortname shq sm so spellfile spr st sts swapsync syn tag tb termbidi tgst titleold top ttimeoutlen ttyscroll ul ur unnamedclip unc verbosefile visualbell 
+syn keyword vimOption contained	altkeymap arabic autowrite backupcopy bdir bin bomb bt ccv charconvert cinoptions cms comments conceallevel cpo cscopequickfix csqf cursorbind define diffexpr dy ef eol esckeys fcs fdn ff fileignorecase fmr foldlevel foldtext fsync gfs gtl guioptions hf hk hlsearch imactivatekey imi include inex isi js kp linebreak lm lz matchpairs maxmemtot mkspellmem mod mousef mouset nf oft pa path pheader previewheight printmbcharset pvw regexpengine rightleft rtp sbo scrolljump sel shell shortname shq sm so spellfile spr st sts swapsync syn tag tb termbidi tgst titleold top ttimeoutlen ttyscroll ul ur unnamedclip unc verbosefile visualbell 
 
 " vimOptions: These are the turn-off setting variants {{{2
 syn keyword vimOption contained	noacd noallowrevins noantialias noarabic noarshape noautoread noaw noballooneval nobinary nobk nobuflisted nocin noconfirm nocopyindent nocscoperelative nocsre nocuc nocursorcolumn nodelcombine nodigraph noed noendofline noerrorbells noex nofen nofk nogd nohid nohkmap nohkp nohlsearch noicon noim noimcmdline noimdisable noinf noinsertmode nojoinspaces nolazyredraw nolinebreak nolist nolpl noma nomagic noml nomodeline nomodified nomousef nomousehide nonumber noopendevice nopi nopreviewwindow nopvw norelativenumber norestorescreen nori norl noro noru nosb noscb noscs nosft noshelltemp noshortname noshowfulltag noshowmode nosm nosmartindent nosmd nosol nosplitbelow nospr nossl nostartofline noswapfile nota notagrelative notbi notbs noterse notextmode notgst notimeout noto notr nottybuiltin notx noundofile novisualbell nowarn noweirdinvert nowfw nowildignorecase nowinfixheight nowiv nowrap nowrite nowritebackup

src/nvim/option.c

@@ -1390,9 +1390,6 @@ static struct vimoption
   {"shelltemp",   "stmp", P_BOOL,
    (char_u *)&p_stmp, PV_NONE,
    {(char_u *)FALSE, (char_u *)TRUE} SCRIPTID_INIT},
-  {"shelltype",   "st",   P_NUM|P_VI_DEF,
-   (char_u *)NULL, PV_NONE,
-   {(char_u *)0L, (char_u *)0L} SCRIPTID_INIT},
   {"shellxquote", "sxq",  P_STRING|P_VI_DEF|P_SECURE,
    (char_u *)&p_sxq, PV_NONE,
    {