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+vim9script
+
+# Vim function for detecting a filetype from the file contents.
+# Invoked from "scripts.vim" in 'runtimepath'
+#
+# Maintainer: Bram Moolenaar <Bram@vim.org>
+# Last Change: 2022 Nov 24
+
+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 dash ksh ksh93 sh
+ if name =~ '^\(bash\d*\|dash\|ksh\d*\|sh\)\>'
+ 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
+
+ # Icon
+ elseif name =~ 'icon\>'
+ set ft=icon
+
+ # Guile
+ elseif name =~ 'guile'
+ set ft=scheme
+
+ 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
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-05 22:33:22 +0000