Update runtime files
diff --git a/runtime/ftplugin/perl6.vim b/runtime/ftplugin/perl6.vim
deleted file mode 100644
index 0467bea..0000000
--- a/runtime/ftplugin/perl6.vim
+++ /dev/null
@@ -1,77 +0,0 @@
-" Vim filetype plugin file
-" Language:      Perl 6
-" Maintainer:    vim-perl <vim-perl@googlegroups.com>
-" Homepage:      https://github.com/vim-perl/vim-perl
-" Bugs/requests: https://github.com/vim-perl/vim-perl/issues
-" Last Change:   2020 Apr 15
-" Contributors:  Hinrik Örn Sigurðsson <hinrik.sig@gmail.com>
-"
-" Based on ftplugin/perl.vim by Dan Sharp <dwsharp at hotmail dot com>
-
-if exists("b:did_ftplugin") | finish | endif
-let b:did_ftplugin = 1
-
-" Make sure the continuation lines below do not cause problems in
-" compatibility mode.
-let s:save_cpo = &cpo
-set cpo-=C
-
-setlocal formatoptions-=t
-setlocal formatoptions+=crqol
-setlocal keywordprg=p6doc
-
-setlocal comments=:#
-setlocal commentstring=#%s
-
-" Change the browse dialog on Win32 to show mainly Perl-related files
-if has("gui_win32")
-    let b:browsefilter = "Perl Source Files (*.pl)\t*.pl\n" .
-               \ "Perl Modules (*.pm)\t*.pm\n" .
-               \ "Perl Documentation Files (*.pod)\t*.pod\n" .
-               \ "All Files (*.*)\t*.*\n"
-endif
-
-" Provided by Ned Konz <ned at bike-nomad dot com>
-"---------------------------------------------
-setlocal include=\\<\\(use\\\|require\\)\\>
-setlocal includeexpr=substitute(substitute(v:fname,'::','/','g'),'$','.pm','')
-setlocal define=[^A-Za-z_]
-
-" The following line changes a global variable but is necessary to make
-" gf and similar commands work. Thanks to Andrew Pimlott for pointing out
-" the problem. If this causes a " problem for you, add an
-" after/ftplugin/perl6.vim file that contains
-"       set isfname-=:
-set isfname+=:
-setlocal iskeyword=48-57,_,A-Z,a-z,:,-
-
-" Set this once, globally.
-if !exists("perlpath")
-    if executable("perl6")
-        try
-            if &shellxquote != '"'
-                let perlpath = system('perl6 -e  "@*INC.join(q/,/).say"')
-            else
-                let perlpath = system("perl6 -e  '@*INC.join(q/,/).say'")
-            endif
-            let perlpath = substitute(perlpath,',.$',',,','')
-        catch /E145:/
-            let perlpath = ".,,"
-        endtry
-    else
-        " If we can't call perl to get its path, just default to using the
-        " current directory and the directory of the current file.
-        let perlpath = ".,,"
-    endif
-endif
-
-let &l:path=perlpath
-"---------------------------------------------
-
-" Undo the stuff we changed.
-let b:undo_ftplugin = "setlocal fo< com< cms< inc< inex< def< isk<" .
-        \         " | unlet! b:browsefilter"
-
-" Restore the saved compatibility options.
-let &cpo = s:save_cpo
-unlet s:save_cpo
diff --git a/runtime/ftplugin/r.vim b/runtime/ftplugin/r.vim
index 4ea3073..a78afa2 100644
--- a/runtime/ftplugin/r.vim
+++ b/runtime/ftplugin/r.vim
@@ -2,7 +2,7 @@
 " Language: R
 " Maintainer: Jakson Alves de Aquino <jalvesaq@gmail.com>
 " Homepage: https://github.com/jalvesaq/R-Vim-runtime
-" Last Change:	Tue Apr 07, 2015  04:38PM
+" Last Change:	Sat Aug 15, 2020  11:37AM
 
 " Only do this when not yet done for this buffer
 if exists("b:did_ftplugin")
@@ -20,7 +20,7 @@
 setlocal commentstring=#\ %s
 setlocal comments=:#',:###,:##,:#
 
-if has("gui_win32") && !exists("b:browsefilter")
+if (has("gui_win32") || has("gui_gtk")) && !exists("b:browsefilter")
   let b:browsefilter = "R Source Files (*.R)\t*.R\n" .
         \ "Files that include R (*.Rnw *.Rd *.Rmd *.Rrst)\t*.Rnw;*.Rd;*.Rmd;*.Rrst\n" .
         \ "All Files (*.*)\t*.*\n"
diff --git a/runtime/ftplugin/raku.vim b/runtime/ftplugin/raku.vim
new file mode 100644
index 0000000..941222b
--- /dev/null
+++ b/runtime/ftplugin/raku.vim
@@ -0,0 +1,127 @@
+" Vim filetype plugin file
+" Language:      Raku
+" Maintainer:    vim-perl <vim-perl@googlegroups.com>
+" Homepage:      https://github.com/Raku/vim-raku
+" Bugs/requests: https://github.com/Raku/vim-raku/issues
+" Last Change:   2021-04-16
+" Contributors:  Hinrik Örn Sigurðsson <hinrik.sig@gmail.com>
+"
+" Based on ftplugin/perl.vim by Dan Sharp <dwsharp at hotmail dot com>
+
+if exists("b:did_ftplugin") | finish | endif
+let b:did_ftplugin = 1
+
+" Make sure the continuation lines below do not cause problems in
+" compatibility mode.
+let s:save_cpo = &cpo
+set cpo-=C
+
+setlocal formatoptions-=t
+setlocal formatoptions+=crqol
+setlocal keywordprg=p6doc
+
+setlocal comments=:#\|,:#=,:#
+setlocal commentstring=#%s
+
+" Provided by Ned Konz <ned at bike-nomad dot com>
+"---------------------------------------------
+setlocal include=\\<\\(use\\\|require\\)\\>
+setlocal includeexpr=substitute(v:fname,'::','/','g')
+setlocal suffixesadd=.rakumod,.rakudoc,.pm6,.pm
+setlocal define=[^A-Za-z_]
+
+" The following line changes a global variable but is necessary to make
+" gf and similar commands work. Thanks to Andrew Pimlott for pointing out
+" the problem. If this causes a problem for you, add an
+" after/ftplugin/raku.vim file that contains
+"       set isfname-=:
+set isfname+=:
+setlocal iskeyword=@,48-57,_,192-255,-
+
+" Raku exposes its CompUnits through $*REPO, but mapping module names to
+" compunit paths is nontrivial. Probably it's more convenient to rely on
+" people using zef, which has a handy store of sources for modules it has
+" installed.
+func s:compareReverseFtime(a, b)
+    let atime = getftime(a:a)
+    let btime = getftime(a:b)
+    return atime > btime ? -1 : atime == btime ? 0 : 1
+endfunc
+
+let &l:path = "lib,."
+if exists('$RAKULIB')
+    let &l:path = &l:path . "," . $RAKULIB
+endif
+let &l:path = &l:path . "," . join(
+            \ sort(glob("~/.zef/store/*/*/lib", 0, 1), "s:compareReverseFtime"),
+            \ ',')
+
+" Convert ascii-based ops into their single-character unicode equivalent
+if get(g:, 'raku_unicode_abbrevs', 0)
+    iabbrev <buffer> !(<) ⊄
+    iabbrev <buffer> !(<=) ⊈
+    iabbrev <buffer> !(>) ⊅
+    iabbrev <buffer> !(>=) ⊉
+    iabbrev <buffer> !(cont) ∌
+    iabbrev <buffer> !(elem) ∉
+    iabbrev <buffer> != ≠
+    iabbrev <buffer> (&) ∩
+    iabbrev <buffer> (+) ⊎
+    iabbrev <buffer> (-) ∖
+    iabbrev <buffer> (.) ⊍
+    iabbrev <buffer> (<) ⊂
+    iabbrev <buffer> (<+) ≼
+    iabbrev <buffer> (<=) ⊆
+    iabbrev <buffer> (>) ⊃
+    iabbrev <buffer> (>+) ≽
+    iabbrev <buffer> (>=) ⊇
+    iabbrev <buffer> (\|) ∪
+    iabbrev <buffer> (^) ⊖
+    iabbrev <buffer> (atomic) ⚛
+    iabbrev <buffer> (cont) ∋
+    iabbrev <buffer> (elem) ∈
+    iabbrev <buffer> * ×
+    iabbrev <buffer> **0 ⁰
+    iabbrev <buffer> **1 ¹
+    iabbrev <buffer> **2 ²
+    iabbrev <buffer> **3 ³
+    iabbrev <buffer> **4 ⁴
+    iabbrev <buffer> **5 ⁵
+    iabbrev <buffer> **6 ⁶
+    iabbrev <buffer> **7 ⁷
+    iabbrev <buffer> **8 ⁸
+    iabbrev <buffer> **9 ⁹
+    iabbrev <buffer> ... …
+    iabbrev <buffer> / ÷
+    iabbrev <buffer> << «
+    iabbrev <buffer> <<[=]<< «=«
+    iabbrev <buffer> <<[=]>> «=»
+    iabbrev <buffer> <= ≤
+    iabbrev <buffer> =~= ≅
+    iabbrev <buffer> >= ≥
+    iabbrev <buffer> >> »
+    iabbrev <buffer> >>[=]<< »=«
+    iabbrev <buffer> >>[=]>> »=»
+    iabbrev <buffer> Inf ∞
+    iabbrev <buffer> atomic-add-fetch ⚛+=
+    iabbrev <buffer> atomic-assign ⚛=
+    iabbrev <buffer> atomic-fetch ⚛
+    iabbrev <buffer> atomic-dec-fetch --⚛
+    iabbrev <buffer> atomic-fetch-dec ⚛--
+    iabbrev <buffer> atomic-fetch-inc ⚛++
+    iabbrev <buffer> atomic-inc-fetch ++⚛
+    iabbrev <buffer> atomic-sub-fetch ⚛−=
+    iabbrev <buffer> e 𝑒
+    iabbrev <buffer> o ∘
+    iabbrev <buffer> pi π
+    iabbrev <buffer> set() ∅
+    iabbrev <buffer> tau τ
+endif
+
+" Undo the stuff we changed.
+let b:undo_ftplugin = "setlocal fo< com< cms< inc< inex< def< isf< isk< kp< path<" .
+        \         " | unlet! b:browsefilter"
+
+" Restore the saved compatibility options.
+let &cpo = s:save_cpo
+unlet s:save_cpo
diff --git a/runtime/ftplugin/rhelp.vim b/runtime/ftplugin/rhelp.vim
index fdac38f..d0b546d 100644
--- a/runtime/ftplugin/rhelp.vim
+++ b/runtime/ftplugin/rhelp.vim
@@ -2,7 +2,7 @@
 " Language: R help file
 " Maintainer: Jakson Alves de Aquino <jalvesaq@gmail.com>
 " Homepage: https://github.com/jalvesaq/R-Vim-runtime
-" Last Change:	Tue Apr 07, 2015  04:37PM
+" Last Change:	Sat Aug 15, 2020  12:01PM
 
 " Only do this when not yet done for this buffer
 if exists("b:did_ftplugin")
@@ -17,7 +17,7 @@
 
 setlocal iskeyword=@,48-57,_,.
 
-if has("gui_win32") && !exists("b:browsefilter")
+if (has("gui_win32") || has("gui_gtk")) && !exists("b:browsefilter")
   let b:browsefilter = "R Source Files (*.R *.Rnw *.Rd *.Rmd *.Rrst)\t*.R;*.Rnw;*.Rd;*.Rmd;*.Rrst\n" .
         \ "All Files (*.*)\t*.*\n"
 endif
diff --git a/runtime/ftplugin/rmd.vim b/runtime/ftplugin/rmd.vim
index 7b0db8d..2ee72ff 100644
--- a/runtime/ftplugin/rmd.vim
+++ b/runtime/ftplugin/rmd.vim
@@ -2,7 +2,7 @@
 " Language: R Markdown file
 " Maintainer: Jakson Alves de Aquino <jalvesaq@gmail.com>
 " Homepage: https://github.com/jalvesaq/R-Vim-runtime
-" Last Change:	Sun Jul 22, 2018  06:51PM
+" Last Change:	Sat Aug 15, 2020  12:03PM
 " Original work by Alex Zvoleff (adjusted from R help for rmd by Michel Kuhlmann)
 
 " Only do this when not yet done for this buffer
@@ -46,7 +46,7 @@
 " Don't load another plugin for this buffer
 let b:did_ftplugin = 1
 
-if has("gui_win32") && !exists("b:browsefilter")
+if (has("gui_win32") || has("gui_gtk")) && !exists("b:browsefilter")
   let b:browsefilter = "R Source Files (*.R *.Rnw *.Rd *.Rmd *.Rrst)\t*.R;*.Rnw;*.Rd;*.Rmd;*.Rrst\n" .
         \ "All Files (*.*)\t*.*\n"
 endif
diff --git a/runtime/ftplugin/rnoweb.vim b/runtime/ftplugin/rnoweb.vim
index e184399..dc5f1b5 100644
--- a/runtime/ftplugin/rnoweb.vim
+++ b/runtime/ftplugin/rnoweb.vim
@@ -2,7 +2,7 @@
 " Language: Rnoweb
 " Maintainer: Jakson Alves de Aquino <jalvesaq@gmail.com>
 " Homepage: https://github.com/jalvesaq/R-Vim-runtime
-" Last Change:	Tue Apr 07, 2015  04:37PM
+" Last Change:	Sat Aug 15, 2020  12:02PM
 
 " Only do this when not yet done for this buffer
 if exists("b:did_ftplugin")
@@ -24,7 +24,7 @@
 setlocal suffixesadd=.bib,.tex
 setlocal comments=b:%,b:#,b:##,b:###,b:#'
 
-if has("gui_win32") && !exists("b:browsefilter")
+if (has("gui_win32") || has("gui_gtk")) && !exists("b:browsefilter")
   let b:browsefilter = "R Source Files (*.R *.Rnw *.Rd *.Rmd *.Rrst)\t*.R;*.Rnw;*.Rd;*.Rmd;*.Rrst\n" .
         \ "All Files (*.*)\t*.*\n"
 endif
diff --git a/runtime/ftplugin/rrst.vim b/runtime/ftplugin/rrst.vim
index 3e82847..a56fd64 100644
--- a/runtime/ftplugin/rrst.vim
+++ b/runtime/ftplugin/rrst.vim
@@ -2,7 +2,7 @@
 " Language: reStructuredText documentation format with R code
 " Maintainer: Jakson Alves de Aquino <jalvesaq@gmail.com>
 " Homepage: https://github.com/jalvesaq/R-Vim-runtime
-" Last Change:	Wed Nov 01, 2017  10:47PM
+" Last Change:	Sat Aug 15, 2020  12:02PM
 " Original work by Alex Zvoleff
 
 " Only do this when not yet done for this buffer
@@ -37,7 +37,7 @@
   setlocal formatexpr=FormatRrst()
 endif
 
-if has("gui_win32") && !exists("b:browsefilter")
+if (has("gui_win32") || has("gui_gtk")) && !exists("b:browsefilter")
   let b:browsefilter = "R Source Files (*.R *.Rnw *.Rd *.Rmd *.Rrst)\t*.R;*.Rnw;*.Rd;*.Rmd;*.Rrst\n" .
         \ "All Files (*.*)\t*.*\n"
 endif