Patch 8.2.4372
Problem:    Filetype detection from file contents is in legacy script.
Solution:   Use a compiled function for filetype detection.
Files:      runtime/scripts.vim, runtime/autoload/dist/script.vim


*** ../vim-8.2.4371/runtime/scripts.vim 2022-01-15 12:27:03.540876108 +0000
--- runtime/scripts.vim 2022-02-13 19:53:14.335267450 +0000
***************
*** 1,7 ****
  " Vim support file to detect file types in scripts
  "
  " Maintainer: Bram Moolenaar <[email protected]>
! " Last change:        2020 Jun 07
  
  " This file is called by an autocommand for every file that has just been
  " loaded into a buffer.  It checks if the type of file can be recognized by
--- 1,7 ----
  " Vim support file to detect file types in scripts
  "
  " Maintainer: Bram Moolenaar <[email protected]>
! " Last change:        2022 Feb 13
  
  " This file is called by an autocommand for every file that has just been
  " loaded into a buffer.  It checks if the type of file can be recognized by
***************
*** 12,18 ****
  " =~? instead.  Do not use =~ anywhere.
  
  
! " Only do the rest when the FileType autocommand has not been triggered yet.
  if did_filetype()
    finish
  endif
--- 12,18 ----
  " =~? instead.  Do not use =~ anywhere.
  
  
! " Bail out when a FileType autocommand has already set the filetype.
  if did_filetype()
    finish
  endif
***************
*** 26,447 ****
    endif
  endif
  
! " Line continuation is used here, remove 'C' from 'cpoptions'
! let s:cpo_save = &cpo
! set cpo&vim
! 
! let s:line1 = getline(1)
! 
! if s:line1 =~# "^#!"
!   " A script that starts with "#!".
! 
!   " Check for a line like "#!/usr/bin/env {options} bash".  Turn it into
!   " "#!/usr/bin/bash" to make matching easier.
!   " Recognize only a few {options} that are commonly used.
!   if s:line1 =~# '^#!\s*\S*\<env\s'
!     let s:line1 = substitute(s:line1, '\S\+=\S\+', '', 'g')
!     let s:line1 = substitute(s:line1, 
'\(-[iS]\|--ignore-environment\|--split-string\)', '', '')
!     let s:line1 = substitute(s:line1, '\<env\s\+', '', '')
!   endif
! 
!   " Get the program name.
!   " Only accept spaces in PC style paths: "#!c:/program files/perl [args]".
!   " If the word env is used, use the first word after the space:
!   " "#!/usr/bin/env perl [path/args]"
!   " If there is no path use the first word: "#!perl [path/args]".
!   " Otherwise get the last word after a slash: "#!/usr/bin/perl [path/args]".
!   if s:line1 =~# '^#!\s*\a:[/\\]'
!     let s:name = substitute(s:line1, '^#!.*[/\\]\(\i\+\).*', '\1', '')
!   elseif s:line1 =~# '^#!.*\<env\>'
!     let s:name = substitute(s:line1, '^#!.*\<env\>\s\+\(\i\+\).*', '\1', '')
!   elseif s:line1 =~# '^#!\s*[^/\\ ]*\>\([^/\\]\|$\)'
!     let s:name = substitute(s:line1, '^#!\s*\([^/\\ ]*\>\).*', '\1', '')
!   else
!     let s:name = substitute(s:line1, '^#!\s*\S*[/\\]\(\i\+\).*', '\1', '')
!   endif
! 
!   " tcl scripts may have #!/bin/sh in the first line and "exec wish" in the
!   " third line.  Suggested by Steven Atkinson.
!   if getline(3) =~# '^exec wish'
!     let s:name = 'wish'
!   endif
! 
!   " Bourne-like shell scripts: bash bash2 ksh ksh93 sh
!   if s:name =~# '^\(bash\d*\|\|ksh\d*\|sh\)\>'
!     call dist#ft#SetFileTypeSH(s:line1)       " defined in filetype.vim
! 
!     " csh scripts
!   elseif s:name =~# '^csh\>'
!     if exists("g:filetype_csh")
!       call dist#ft#SetFileTypeShell(g:filetype_csh)
!     else
!       call dist#ft#SetFileTypeShell("csh")
!     endif
! 
!     " tcsh scripts
!   elseif s:name =~# '^tcsh\>'
!     call dist#ft#SetFileTypeShell("tcsh")
! 
!     " Z shell scripts
!   elseif s:name =~# '^zsh\>'
!     set ft=zsh
! 
!     " TCL scripts
!   elseif s:name =~# '^\(tclsh\|wish\|expectk\|itclsh\|itkwish\)\>'
!     set ft=tcl
! 
!     " Expect scripts
!   elseif s:name =~# '^expect\>'
!     set ft=expect
! 
!     " Gnuplot scripts
!   elseif s:name =~# '^gnuplot\>'
!     set ft=gnuplot
! 
!     " Makefiles
!   elseif s:name =~# 'make\>'
!     set ft=make
! 
!     " Pike
!   elseif s:name =~# '^pike\%(\>\|[0-9]\)'
!     set ft=pike
! 
!     " Lua
!   elseif s:name =~# 'lua'
!     set ft=lua
! 
!     " Perl
!   elseif s:name =~# 'perl'
!     set ft=perl
! 
!     " PHP
!   elseif s:name =~# 'php'
!     set ft=php
! 
!     " Python
!   elseif s:name =~# 'python'
!     set ft=python
! 
!     " Groovy
!   elseif s:name =~# '^groovy\>'
!     set ft=groovy
! 
!     " Raku
!   elseif s:name =~# 'raku'
!     set ft=raku
! 
!     " Ruby
!   elseif s:name =~# 'ruby'
!     set ft=ruby
! 
!     " JavaScript
!   elseif s:name =~# 'node\(js\)\=\>\|js\>' || s:name =~# 'rhino\>'
!     set ft=javascript
! 
!     " BC calculator
!   elseif s:name =~# '^bc\>'
!     set ft=bc
! 
!     " sed
!   elseif s:name =~# 'sed\>'
!     set ft=sed
! 
!     " OCaml-scripts
!   elseif s:name =~# 'ocaml'
!     set ft=ocaml
! 
!     " Awk scripts; also finds "gawk"
!   elseif s:name =~# 'awk\>'
!     set ft=awk
! 
!     " Website MetaLanguage
!   elseif s:name =~# 'wml'
!     set ft=wml
! 
!     " Scheme scripts
!   elseif s:name =~# 'scheme'
!     set ft=scheme
! 
!     " CFEngine scripts
!   elseif s:name =~# 'cfengine'
!     set ft=cfengine
! 
!     " Erlang scripts
!   elseif s:name =~# 'escript'
!     set ft=erlang
! 
!     " Haskell
!   elseif s:name =~# 'haskell'
!     set ft=haskell
! 
!     " Scala
!   elseif s:name =~# 'scala\>'
!     set ft=scala
! 
!     " Clojure
!   elseif s:name =~# 'clojure'
!     set ft=clojure
! 
!     " Free Pascal
!   elseif s:name =~# 'instantfpc\>'
!     set ft=pascal
! 
!     " Fennel
!   elseif s:name =~# 'fennel\>'
!     set ft=fennel
! 
!     " MikroTik RouterOS script
!   elseif s:name =~# 'rsc\>'
!     set ft=routeros
! 
!     " Fish shell
!   elseif s:name =~# 'fish\>'
!     set ft=fish
! 
!     " Gforth
!   elseif s:name =~# 'gforth\>'
!     set ft=forth
! 
!   endif
!   unlet s:name
! 
! else
!   " File does not start with "#!".
! 
!   let s:line2 = getline(2)
!   let s:line3 = getline(3)
!   let s:line4 = getline(4)
!   let s:line5 = getline(5)
! 
!   " Bourne-like shell scripts: sh ksh bash bash2
!   if s:line1 =~# '^:$'
!     call dist#ft#SetFileTypeSH(s:line1)       " defined in filetype.vim
! 
!   " Z shell scripts
!   elseif s:line1 =~# '^#compdef\>' || s:line1 =~# '^#autoload\>' ||
!         \ "\n".s:line1."\n".s:line2."\n".s:line3."\n".s:line4."\n".s:line5 
=~# '\n\s*emulate\s\+\%(-[LR]\s\+\)\=[ckz]\=sh\>'
!     set ft=zsh
! 
!   " ELM Mail files
!   elseif s:line1 =~# '^From \([a-zA-Z][a-zA-Z_0-9\.=-]*\(@[^ ]*\)\=\|-\) .* 
\(19\|20\)\d\d$'
!     set ft=mail
! 
!   " Mason
!   elseif s:line1 =~# '^<[%&].*>'
!     set ft=mason
! 
!   " Vim scripts (must have '" vim' as the first line to trigger this)
!   elseif s:line1 =~# '^" *[vV]im$'
!     set ft=vim
! 
!   " libcxx and libstdc++ standard library headers like "iostream" do not have
!   " an extension, recognize the Emacs file mode.
!   elseif s:line1 =~? '-\*-.*C++.*-\*-'
!     set ft=cpp
! 
!   " MOO
!   elseif s:line1 =~# '^\*\* LambdaMOO Database, Format Version 
\%([1-3]\>\)\@!\d\+ \*\*$'
!     set ft=moo
! 
!     " Diff file:
!     " - "diff" in first line (context diff)
!     " - "Only in " in first line
!     " - "--- " in first line and "+++ " in second line (unified diff).
!     " - "*** " in first line and "--- " in second line (context diff).
!     " - "# It was generated by makepatch " in the second line (makepatch 
diff).
!     " - "Index: <filename>" in the first line (CVS file)
!     " - "=== ", line of "=", "---", "+++ " (SVK diff)
!     " - "=== ", "--- ", "+++ " (bzr diff, common case)
!     " - "=== (removed|added|renamed|modified)" (bzr diff, alternative)
!     " - "# HG changeset patch" in first line (Mercurial export format)
!   elseif s:line1 =~# '^\(diff\>\|Only in \|\d\+\(,\d\+\)\=[cda]\d\+\>\|# It 
was generated by makepatch \|Index:\s\+\f\+\r\=$\|===== \f\+ \d\+\.\d\+ vs 
edited\|==== //\f\+#\d\+\|# HG changeset patch\)'
!       \ || (s:line1 =~# '^--- ' && s:line2 =~# '^+++ ')
!       \ || (s:line1 =~# '^\* looking for ' && s:line2 =~# '^\* comparing to ')
!       \ || (s:line1 =~# '^\*\*\* ' && s:line2 =~# '^--- ')
!       \ || (s:line1 =~# '^=== ' && ((s:line2 =~# '^=\{66\}' && s:line3 =~# 
'^--- ' && s:line4 =~# '^+++') || (s:line2 =~# '^--- ' && s:line3 =~# '^+++ ')))
!       \ || (s:line1 =~# '^=== \(removed\|added\|renamed\|modified\)')
!     set ft=diff
! 
!     " PostScript Files (must have %!PS as the first line, like a2ps output)
!   elseif s:line1 =~# '^%![ \t]*PS'
!     set ft=postscr
! 
!     " M4 scripts: Guess there is a line that starts with "dnl".
!   elseif s:line1 =~# '^\s*dnl\>'
!       \ || s:line2 =~# '^\s*dnl\>'
!       \ || s:line3 =~# '^\s*dnl\>'
!       \ || s:line4 =~# '^\s*dnl\>'
!       \ || s:line5 =~# '^\s*dnl\>'
!     set ft=m4
! 
!     " AmigaDos scripts
!   elseif $TERM == "amiga"
!       \ && (s:line1 =~# "^;" || s:line1 =~? '^\.bra')
!     set ft=amiga
! 
!     " SiCAD scripts (must have procn or procd as the first line to trigger 
this)
!   elseif s:line1 =~? '^ *proc[nd] *$'
!     set ft=sicad
! 
!     " Purify log files start with "****  Purify"
!   elseif s:line1 =~# '^\*\*\*\*  Purify'
!     set ft=purifylog
! 
!     " XML
!   elseif s:line1 =~# '<?\s*xml.*?>'
!     set ft=xml
! 
!     " XHTML (e.g.: PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN")
!   elseif s:line1 =~# '\<DTD\s\+XHTML\s'
!     set ft=xhtml
! 
!     " HTML (e.g.: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN")
!     " Avoid "doctype html", used by slim.
!   elseif s:line1 =~? '<!DOCTYPE\s\+html\>'
!     set ft=html
! 
!     " PDF
!   elseif s:line1 =~# '^%PDF-'
!     set ft=pdf
! 
!     " XXD output
!   elseif s:line1 =~# '^\x\{7}: \x\{2} \=\x\{2} \=\x\{2} \=\x\{2} '
!     set ft=xxd
! 
!     " RCS/CVS log output
!   elseif s:line1 =~# '^RCS file:' || s:line2 =~# '^RCS file:'
!     set ft=rcslog
! 
!     " CVS commit
!   elseif s:line2 =~# '^CVS:' || getline("$") =~# '^CVS: '
!     set ft=cvs
! 
!     " Prescribe
!   elseif s:line1 =~# '^!R!'
!     set ft=prescribe
! 
!     " Send-pr
!   elseif s:line1 =~# '^SEND-PR:'
!     set ft=sendpr
! 
!     " SNNS files
!   elseif s:line1 =~# '^SNNS network definition file'
!     set ft=snnsnet
!   elseif s:line1 =~# '^SNNS pattern definition file'
!     set ft=snnspat
!   elseif s:line1 =~# '^SNNS result file'
!     set ft=snnsres
! 
!     " Virata
!   elseif s:line1 =~# '^%.\{-}[Vv]irata'
!       \ || s:line2 =~# '^%.\{-}[Vv]irata'
!       \ || s:line3 =~# '^%.\{-}[Vv]irata'
!       \ || s:line4 =~# '^%.\{-}[Vv]irata'
!       \ || s:line5 =~# '^%.\{-}[Vv]irata'
!     set ft=virata
! 
!     " Strace
!   elseif s:line1 =~# '[0-9:.]* *execve(' || s:line1 =~# '^__libc_start_main'
!     set ft=strace
! 
!     " VSE JCL
!   elseif s:line1 =~# '^\* $$ JOB\>' || s:line1 =~# '^// *JOB\>'
!     set ft=vsejcl
! 
!     " TAK and SINDA
!   elseif s:line4 =~# 'K & K  Associates' || s:line2 =~# 'TAK 2000'
!     set ft=takout
!   elseif s:line3 =~# 'S Y S T E M S   I M P R O V E D '
!     set ft=sindaout
!   elseif getline(6) =~# 'Run Date: '
!     set ft=takcmp
!   elseif getline(9) =~# 'Node    File  1'
!     set ft=sindacmp
! 
!     " DNS zone files
!   elseif s:line1.s:line2.s:line3.s:line4 =~# '^; <<>> DiG [0-9.]\+.* 
<<>>\|$ORIGIN\|$TTL\|IN\s\+SOA'
!     set ft=bindzone
! 
!     " BAAN
!   elseif s:line1 =~# '|\*\{1,80}' && s:line2 =~# 'VRC '
!       \ || s:line2 =~# '|\*\{1,80}' && s:line3 =~# 'VRC '
!     set ft=baan
! 
!   " Valgrind
!   elseif s:line1 =~# '^==\d\+== valgrind' || s:line3 =~# '^==\d\+== Using 
valgrind'
!     set ft=valgrind
! 
!   " Go docs
!   elseif s:line1 =~# '^PACKAGE DOCUMENTATION$'
!     set ft=godoc
! 
!   " Renderman Interface Bytestream
!   elseif s:line1 =~# '^##RenderMan'
!     set ft=rib
! 
!   " Scheme scripts
!   elseif s:line1 =~# 'exec\s\+\S*scheme' || s:line2 =~# 'exec\s\+\S*scheme'
!     set ft=scheme
! 
!   " Git output
!   elseif s:line1 =~# '^\(commit\|tree\|object\) \x\{40,\}\>\|^tag \S\+$'
!     set ft=git
! 
!    " Gprof (gnu profiler)
!    elseif s:line1 == 'Flat profile:'
!      \ && s:line2 == ''
!      \ && s:line3 =~# '^Each sample counts as .* seconds.$'
!      set ft=gprof
! 
!   " Erlang terms
!   " (See also: 
http://www.gnu.org/software/emacs/manual/html_node/emacs/Choosing-Modes.html#Choosing-Modes)
!   elseif s:line1 =~? '-\*-.*erlang.*-\*-'
!     set ft=erlang
! 
!   " YAML
!   elseif s:line1 =~# '^%YAML'
!     set ft=yaml
! 
!   " MikroTik RouterOS script
!   elseif s:line1 =~# '^#.*by RouterOS.*$'
!     set ft=routeros
! 
!   " Sed scripts
!   " #ncomment is allowed but most likely a false positive so require a space
!   " before any trailing comment text
!   elseif s:line1 =~# '^#n\%($\|\s\)'
!     set ft=sed
! 
!   " CVS diff
!   else
!     let s:lnum = 1
!     while getline(s:lnum) =~# "^? " && s:lnum < line("$")
!       let s:lnum += 1
!     endwhile
!     if getline(s:lnum) =~# '^Index:\s\+\f\+$'
!       set ft=diff
! 
!       " locale input files: Formal Definitions of Cultural Conventions
!       " filename must be like en_US, fr_FR@euro or en_US.UTF-8
!     elseif expand("%") =~# '\a\a_\a\a\($\|[.@]\)\|i18n$\|POSIX$\|translit_'
!       let s:lnum = 1
!       while s:lnum < 100 && s:lnum < line("$")
!       if getline(s:lnum) =~# 
'^LC_\(IDENTIFICATION\|CTYPE\|COLLATE\|MONETARY\|NUMERIC\|TIME\|MESSAGES\|PAPER\|TELEPHONE\|MEASUREMENT\|NAME\|ADDRESS\)$'
!         setf fdcc
!         break
!       endif
!       let s:lnum += 1
!       endwhile
!     endif
!     unlet s:lnum
! 
!   endif
! 
!   unlet s:line2 s:line3 s:line4 s:line5
! 
! endif
! 
! " Restore 'cpoptions'
! let &cpo = s:cpo_save
! 
! unlet s:cpo_save s:line1
--- 26,30 ----
    endif
  endif
  
! " The main code is in a compiled function for speed.
! call dist#script#DetectFiletype()
*** ../vim-8.2.4371/runtime/autoload/dist/script.vim    2022-02-13 
20:30:50.673882982 +0000
--- runtime/autoload/dist/script.vim    2022-02-13 20:29:47.061932971 +0000
***************
*** 0 ****
--- 1,426 ----
+ vim9script
+ 
+ # Vim function for detecting a filetype from the file contents.
+ # Invoked from "scripts.vim" in 'runtimepath'
+ #
+ # Maintainer: Bram Moolenaar <[email protected]>
+ # Last Change:        2022 Feb 13
+ 
+ export def DetectFiletype()
+   var line1 = getline(1)
+   if line1[0] == '#' && line1[1] == '!'
+     # File that starts with "#!".
+     DetectFromHashBang(line1)
+   else
+     # File does not start with "#!".
+     DetectFromText(line1)
+   endif
+ enddef
+ 
+ # Called for a script that has "#!" in the first line.
+ def DetectFromHashBang(firstline: string)
+   var line1 = firstline
+ 
+   # Check for a line like "#!/usr/bin/env {options} bash".  Turn it into
+   # "#!/usr/bin/bash" to make matching easier.
+   # Recognize only a few {options} that are commonly used.
+   if line1 =~ '^#!\s*\S*\<env\s'
+     line1 = substitute(line1, '\S\+=\S\+', '', 'g')
+     line1 = substitute(line1, 
'\(-[iS]\|--ignore-environment\|--split-string\)', '', '')
+     line1 = substitute(line1, '\<env\s\+', '', '')
+   endif
+ 
+   # Get the program name.
+   # Only accept spaces in PC style paths: "#!c:/program files/perl [args]".
+   # If the word env is used, use the first word after the space:
+   # "#!/usr/bin/env perl [path/args]"
+   # If there is no path use the first word: "#!perl [path/args]".
+   # Otherwise get the last word after a slash: "#!/usr/bin/perl [path/args]".
+   var name: string
+   if line1 =~ '^#!\s*\a:[/\\]'
+     name = substitute(line1, '^#!.*[/\\]\(\i\+\).*', '\1', '')
+   elseif line1 =~ '^#!.*\<env\>'
+     name = substitute(line1, '^#!.*\<env\>\s\+\(\i\+\).*', '\1', '')
+   elseif line1 =~ '^#!\s*[^/\\ ]*\>\([^/\\]\|$\)'
+     name = substitute(line1, '^#!\s*\([^/\\ ]*\>\).*', '\1', '')
+   else
+     name = substitute(line1, '^#!\s*\S*[/\\]\(\i\+\).*', '\1', '')
+   endif
+ 
+   # tcl scripts may have #!/bin/sh in the first line and "exec wish" in the
+   # third line.  Suggested by Steven Atkinson.
+   if getline(3) =~ '^exec wish'
+     name = 'wish'
+   endif
+ 
+   # Bourne-like shell scripts: bash bash2 ksh ksh93 sh
+   if name =~ '^\(bash\d*\|\|ksh\d*\|sh\)\>'
+     call dist#ft#SetFileTypeSH(line1)
+ 
+     # csh scripts
+   elseif name =~ '^csh\>'
+     if exists("g:filetype_csh")
+       call dist#ft#SetFileTypeShell(g:filetype_csh)
+     else
+       call dist#ft#SetFileTypeShell("csh")
+     endif
+ 
+     # tcsh scripts
+   elseif name =~ '^tcsh\>'
+     call dist#ft#SetFileTypeShell("tcsh")
+ 
+     # Z shell scripts
+   elseif name =~ '^zsh\>'
+     set ft=zsh
+ 
+     # TCL scripts
+   elseif name =~ '^\(tclsh\|wish\|expectk\|itclsh\|itkwish\)\>'
+     set ft=tcl
+ 
+     # Expect scripts
+   elseif name =~ '^expect\>'
+     set ft=expect
+ 
+     # Gnuplot scripts
+   elseif name =~ '^gnuplot\>'
+     set ft=gnuplot
+ 
+     # Makefiles
+   elseif name =~ 'make\>'
+     set ft=make
+ 
+     # Pike
+   elseif name =~ '^pike\%(\>\|[0-9]\)'
+     set ft=pike
+ 
+     # Lua
+   elseif name =~ 'lua'
+     set ft=lua
+ 
+     # Perl
+   elseif name =~ 'perl'
+     set ft=perl
+ 
+     # PHP
+   elseif name =~ 'php'
+     set ft=php
+ 
+     # Python
+   elseif name =~ 'python'
+     set ft=python
+ 
+     # Groovy
+   elseif name =~ '^groovy\>'
+     set ft=groovy
+ 
+     # Raku
+   elseif name =~ 'raku'
+     set ft=raku
+ 
+     # Ruby
+   elseif name =~ 'ruby'
+     set ft=ruby
+ 
+     # JavaScript
+   elseif name =~ 'node\(js\)\=\>\|js\>' || name =~ 'rhino\>'
+     set ft=javascript
+ 
+     # BC calculator
+   elseif name =~ '^bc\>'
+     set ft=bc
+ 
+     # sed
+   elseif name =~ 'sed\>'
+     set ft=sed
+ 
+     # OCaml-scripts
+   elseif name =~ 'ocaml'
+     set ft=ocaml
+ 
+     # Awk scripts; also finds "gawk"
+   elseif name =~ 'awk\>'
+     set ft=awk
+ 
+     # Website MetaLanguage
+   elseif name =~ 'wml'
+     set ft=wml
+ 
+     # Scheme scripts
+   elseif name =~ 'scheme'
+     set ft=scheme
+ 
+     # CFEngine scripts
+   elseif name =~ 'cfengine'
+     set ft=cfengine
+ 
+     # Erlang scripts
+   elseif name =~ 'escript'
+     set ft=erlang
+ 
+     # Haskell
+   elseif name =~ 'haskell'
+     set ft=haskell
+ 
+     # Scala
+   elseif name =~ 'scala\>'
+     set ft=scala
+ 
+     # Clojure
+   elseif name =~ 'clojure'
+     set ft=clojure
+ 
+     # Free Pascal
+   elseif name =~ 'instantfpc\>'
+     set ft=pascal
+ 
+     # Fennel
+   elseif name =~ 'fennel\>'
+     set ft=fennel
+ 
+     # MikroTik RouterOS script
+   elseif name =~ 'rsc\>'
+     set ft=routeros
+ 
+     # Fish shell
+   elseif name =~ 'fish\>'
+     set ft=fish
+ 
+     # Gforth
+   elseif name =~ 'gforth\>'
+     set ft=forth
+ 
+   endif
+ enddef
+ 
+ 
+ # Called for a script that does not have "#!" in the first line.
+ def DetectFromText(line1: string)
+   var line2 = getline(2)
+   var line3 = getline(3)
+   var line4 = getline(4)
+   var line5 = getline(5)
+ 
+   # Bourne-like shell scripts: sh ksh bash bash2
+   if line1 =~ '^:$'
+     call dist#ft#SetFileTypeSH(line1)
+ 
+   # Z shell scripts
+   elseif line1 =~ '^#compdef\>'
+       || line1 =~ '^#autoload\>'
+       || "\n" .. line1 .. "\n" .. line2 .. "\n" .. line3 ..
+        "\n" .. line4 .. "\n" .. line5
+        =~ '\n\s*emulate\s\+\%(-[LR]\s\+\)\=[ckz]\=sh\>'
+     set ft=zsh
+ 
+   # ELM Mail files
+   elseif line1 =~ '^From \([a-zA-Z][a-zA-Z_0-9\.=-]*\(@[^ ]*\)\=\|-\) .* 
\(19\|20\)\d\d$'
+     set ft=mail
+ 
+   # Mason
+   elseif line1 =~ '^<[%&].*>'
+     set ft=mason
+ 
+   # Vim scripts (must have '" vim' as the first line to trigger this)
+   elseif line1 =~ '^" *[vV]im$'
+     set ft=vim
+ 
+   # libcxx and libstdc++ standard library headers like "iostream" do not have
+   # an extension, recognize the Emacs file mode.
+   elseif line1 =~? '-\*-.*C++.*-\*-'
+     set ft=cpp
+ 
+   # MOO
+   elseif line1 =~ '^\*\* LambdaMOO Database, Format Version 
\%([1-3]\>\)\@!\d\+ \*\*$'
+     set ft=moo
+ 
+     # Diff file:
+     # - "diff" in first line (context diff)
+     # - "Only in " in first line
+     # - "--- " in first line and "+++ " in second line (unified diff).
+     # - "*** " in first line and "--- " in second line (context diff).
+     # - "# It was generated by makepatch " in the second line (makepatch 
diff).
+     # - "Index: <filename>" in the first line (CVS file)
+     # - "=== ", line of "=", "---", "+++ " (SVK diff)
+     # - "=== ", "--- ", "+++ " (bzr diff, common case)
+     # - "=== (removed|added|renamed|modified)" (bzr diff, alternative)
+     # - "# HG changeset patch" in first line (Mercurial export format)
+   elseif line1 =~ '^\(diff\>\|Only in \|\d\+\(,\d\+\)\=[cda]\d\+\>\|# It was 
generated by makepatch \|Index:\s\+\f\+\r\=$\|===== \f\+ \d\+\.\d\+ vs 
edited\|==== //\f\+#\d\+\|# HG changeset patch\)'
+        || (line1 =~ '^--- ' && line2 =~ '^+++ ')
+        || (line1 =~ '^\* looking for ' && line2 =~ '^\* comparing to ')
+        || (line1 =~ '^\*\*\* ' && line2 =~ '^--- ')
+        || (line1 =~ '^=== ' && ((line2 =~ '^=\{66\}' && line3 =~ '^--- ' && 
line4 =~ '^+++') || (line2 =~ '^--- ' && line3 =~ '^+++ ')))
+        || (line1 =~ '^=== \(removed\|added\|renamed\|modified\)')
+     set ft=diff
+ 
+     # PostScript Files (must have %!PS as the first line, like a2ps output)
+   elseif line1 =~ '^%![ \t]*PS'
+     set ft=postscr
+ 
+     # M4 scripts: Guess there is a line that starts with "dnl".
+   elseif line1 =~ '^\s*dnl\>'
+        || line2 =~ '^\s*dnl\>'
+        || line3 =~ '^\s*dnl\>'
+        || line4 =~ '^\s*dnl\>'
+        || line5 =~ '^\s*dnl\>'
+     set ft=m4
+ 
+     # AmigaDos scripts
+   elseif $TERM == "amiga" && (line1 =~ "^;" || line1 =~? '^\.bra')
+     set ft=amiga
+ 
+     # SiCAD scripts (must have procn or procd as the first line to trigger 
this)
+   elseif line1 =~? '^ *proc[nd] *$'
+     set ft=sicad
+ 
+     # Purify log files start with "****  Purify"
+   elseif line1 =~ '^\*\*\*\*  Purify'
+     set ft=purifylog
+ 
+     # XML
+   elseif line1 =~ '<?\s*xml.*?>'
+     set ft=xml
+ 
+     # XHTML (e.g.: PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN")
+   elseif line1 =~ '\<DTD\s\+XHTML\s'
+     set ft=xhtml
+ 
+     # HTML (e.g.: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN")
+     # Avoid "doctype html", used by slim.
+   elseif line1 =~? '<!DOCTYPE\s\+html\>'
+     set ft=html
+ 
+     # PDF
+   elseif line1 =~ '^%PDF-'
+     set ft=pdf
+ 
+     # XXD output
+   elseif line1 =~ '^\x\{7}: \x\{2} \=\x\{2} \=\x\{2} \=\x\{2} '
+     set ft=xxd
+ 
+     # RCS/CVS log output
+   elseif line1 =~ '^RCS file:' || line2 =~ '^RCS file:'
+     set ft=rcslog
+ 
+     # CVS commit
+   elseif line2 =~ '^CVS:' || getline("$") =~ '^CVS: '
+     set ft=cvs
+ 
+     # Prescribe
+   elseif line1 =~ '^!R!'
+     set ft=prescribe
+ 
+     # Send-pr
+   elseif line1 =~ '^SEND-PR:'
+     set ft=sendpr
+ 
+     # SNNS files
+   elseif line1 =~ '^SNNS network definition file'
+     set ft=snnsnet
+   elseif line1 =~ '^SNNS pattern definition file'
+     set ft=snnspat
+   elseif line1 =~ '^SNNS result file'
+     set ft=snnsres
+ 
+     # Virata
+   elseif line1 =~ '^%.\{-}[Vv]irata'
+        || line2 =~ '^%.\{-}[Vv]irata'
+        || line3 =~ '^%.\{-}[Vv]irata'
+        || line4 =~ '^%.\{-}[Vv]irata'
+        || line5 =~ '^%.\{-}[Vv]irata'
+     set ft=virata
+ 
+     # Strace
+   elseif line1 =~ '[0-9:.]* *execve(' || line1 =~ '^__libc_start_main'
+     set ft=strace
+ 
+     # VSE JCL
+   elseif line1 =~ '^\* $$ JOB\>' || line1 =~ '^// *JOB\>'
+     set ft=vsejcl
+ 
+     # TAK and SINDA
+   elseif line4 =~ 'K & K  Associates' || line2 =~ 'TAK 2000'
+     set ft=takout
+   elseif line3 =~ 'S Y S T E M S   I M P R O V E D '
+     set ft=sindaout
+   elseif getline(6) =~ 'Run Date: '
+     set ft=takcmp
+   elseif getline(9) =~ 'Node    File  1'
+     set ft=sindacmp
+ 
+     # DNS zone files
+   elseif line1 .. line2 .. line3 .. line4 =~ '^; <<>> DiG [0-9.]\+.* 
<<>>\|$ORIGIN\|$TTL\|IN\s\+SOA'
+     set ft=bindzone
+ 
+     # BAAN
+   elseif line1 =~ '|\*\{1,80}' && line2 =~ 'VRC '
+        || line2 =~ '|\*\{1,80}' && line3 =~ 'VRC '
+     set ft=baan
+ 
+     # Valgrind
+   elseif line1 =~ '^==\d\+== valgrind' || line3 =~ '^==\d\+== Using valgrind'
+     set ft=valgrind
+ 
+     # Go docs
+   elseif line1 =~ '^PACKAGE DOCUMENTATION$'
+     set ft=godoc
+ 
+     # Renderman Interface Bytestream
+   elseif line1 =~ '^##RenderMan'
+     set ft=rib
+ 
+     # Scheme scripts
+   elseif line1 =~ 'exec\s\+\S*scheme' || line2 =~ 'exec\s\+\S*scheme'
+     set ft=scheme
+ 
+     # Git output
+   elseif line1 =~ '^\(commit\|tree\|object\) \x\{40,\}\>\|^tag \S\+$'
+     set ft=git
+ 
+     # Gprof (gnu profiler)
+   elseif line1 == 'Flat profile:'
+       && line2 == ''
+       && line3 =~ '^Each sample counts as .* seconds.$'
+     set ft=gprof
+ 
+     # Erlang terms
+     # (See also: 
http://www.gnu.org/software/emacs/manual/html_node/emacs/Choosing-Modes.html#Choosing-Modes)
+   elseif line1 =~? '-\*-.*erlang.*-\*-'
+     set ft=erlang
+ 
+     # YAML
+   elseif line1 =~ '^%YAML'
+     set ft=yaml
+ 
+     # MikroTik RouterOS script
+   elseif line1 =~ '^#.*by RouterOS.*$'
+     set ft=routeros
+ 
+     # Sed scripts
+     # #ncomment is allowed but most likely a false positive so require a space
+     # before any trailing comment text
+   elseif line1 =~ '^#n\%($\|\s\)'
+     set ft=sed
+ 
+   else
+     var lnum = 1
+     while getline(lnum) =~ "^? " && lnum < line("$")
+       lnum += 1
+     endwhile
+     if getline(lnum) =~ '^Index:\s\+\f\+$'
+       # CVS diff
+       set ft=diff
+ 
+       # locale input files: Formal Definitions of Cultural Conventions
+       # filename must be like en_US, fr_FR@euro or en_US.UTF-8
+     elseif expand("%") =~ '\a\a_\a\a\($\|[.@]\)\|i18n$\|POSIX$\|translit_'
+       lnum = 1
+       while lnum < 100 && lnum < line("$")
+       if getline(lnum) =~ 
'^LC_\(IDENTIFICATION\|CTYPE\|COLLATE\|MONETARY\|NUMERIC\|TIME\|MESSAGES\|PAPER\|TELEPHONE\|MEASUREMENT\|NAME\|ADDRESS\)$'
+         setf fdcc
+         break
+       endif
+       lnum += 1
+       endwhile
+     endif
+   endif
+ enddef
*** ../vim-8.2.4371/src/version.c       2022-02-13 13:56:25.802074076 +0000
--- src/version.c       2022-02-13 19:51:14.643437796 +0000
***************
*** 752,753 ****
--- 752,755 ----
  {   /* Add new patch number below this line */
+ /**/
+     4372,
  /**/

-- 
You have the right to remain silent. Anything you say will be
misquoted, then used against you.

 /// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net   \\\
///                                                                      \\\
\\\        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ ///
 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///

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