diff --git a/runtime/ftplugin/quarto.vim b/runtime/ftplugin/quarto.vim
new file mode 100644
index 0000000..a76bcc2
--- /dev/null
+++ b/runtime/ftplugin/quarto.vim
@@ -0,0 +1 @@
+runtime ftplugin/rmd.vim
diff --git a/runtime/ftplugin/r.vim b/runtime/ftplugin/r.vim
index a78afa2..2896636 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:	Sat Aug 15, 2020  11:37AM
+" Last Change:	Sun Apr 24, 2022  09:14AM
 
 " Only do this when not yet done for this buffer
 if exists("b:did_ftplugin")
@@ -22,7 +22,7 @@
 
 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" .
+        \ "Files that include R (*.Rnw *.Rd *.Rmd *.Rrst *.qmd)\t*.Rnw;*.Rd;*.Rmd;*.Rrst;*.qmd\n" .
         \ "All Files (*.*)\t*.*\n"
 endif
 
diff --git a/runtime/ftplugin/rhelp.vim b/runtime/ftplugin/rhelp.vim
index d0b546d..2fde487 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:	Sat Aug 15, 2020  12:01PM
+" Last Change:	Sun Apr 24, 2022  09:12AM
 
 " Only do this when not yet done for this buffer
 if exists("b:did_ftplugin")
@@ -18,7 +18,7 @@
 setlocal iskeyword=@,48-57,_,.
 
 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" .
+  let b:browsefilter = "R Source Files (*.R *.Rnw *.Rd *.Rmd *.Rrst *.qmd)\t*.R;*.Rnw;*.Rd;*.Rmd;*.Rrst;*.qmd\n" .
         \ "All Files (*.*)\t*.*\n"
 endif
 
diff --git a/runtime/ftplugin/rmd.vim b/runtime/ftplugin/rmd.vim
index 2ee72ff..355b88f 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:	Sat Aug 15, 2020  12:03PM
+" Last Change:	Sun Apr 24, 2022  09:12AM
 " Original work by Alex Zvoleff (adjusted from R help for rmd by Michel Kuhlmann)
 
 " Only do this when not yet done for this buffer
@@ -32,13 +32,24 @@
   return 1
 endfunction
 
-" If you do not want 'comments' dynamically defined, put in your vimrc:
-" let g:rmd_dynamic_comments = 0
+function! SetRmdCommentStr()
+    if (search("^[ \t]*```[ ]*{r", "bncW") > search("^[ \t]*```$", "bncW")) || ((search('^---$', 'Wn') || search('^\.\.\.$', 'Wn')) && search('^---$', 'bnW'))
+        set commentstring=#\ %s
+    else
+        set commentstring=<!--\ %s\ -->
+    endif
+endfunction
+
+" If you do not want both 'comments' and 'commentstring' dynamically defined,
+" put in your vimrc: let g:rmd_dynamic_comments = 0
 if !exists("g:rmd_dynamic_comments") || (exists("g:rmd_dynamic_comments") && g:rmd_dynamic_comments == 1)
   setlocal formatexpr=FormatRmd()
+  augroup RmdCStr
+    autocmd!
+    autocmd CursorMoved <buffer> call SetRmdCommentStr()
+  augroup END
 endif
 
-
 " Enables pandoc if it is installed
 unlet! b:did_ftplugin
 runtime ftplugin/pandoc.vim
@@ -47,7 +58,7 @@
 let b:did_ftplugin = 1
 
 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" .
+  let b:browsefilter = "R Source Files (*.R *.Rnw *.Rd *.Rmd *.Rrst *.qmd)\t*.R;*.Rnw;*.Rd;*.Rmd;*.Rrst;*.qmd\n" .
         \ "All Files (*.*)\t*.*\n"
 endif
 
diff --git a/runtime/ftplugin/rnoweb.vim b/runtime/ftplugin/rnoweb.vim
index dc5f1b5..cf1c092 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:	Sat Aug 15, 2020  12:02PM
+" Last Change:	Sun Apr 24, 2022  09:13AM
 
 " Only do this when not yet done for this buffer
 if exists("b:did_ftplugin")
@@ -25,10 +25,27 @@
 setlocal comments=b:%,b:#,b:##,b:###,b:#'
 
 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" .
+  let b:browsefilter = "R Source Files (*.R *.Rnw *.Rd *.Rmd *.Rrst *.qmd)\t*.R;*.Rnw;*.Rd;*.Rmd;*.Rrst;*.qmd\n" .
         \ "All Files (*.*)\t*.*\n"
 endif
 
+function! SetRnwCommentStr()
+    if (search("^\s*<<.*>>=", "bncW") > search("^@", "bncW"))
+        set commentstring=#\ %s
+    else
+        set commentstring=%\ %s
+    endif
+endfunction
+
+" If you do not want both 'comments' and 'commentstring' dynamically defined,
+" put in your vimrc: let g:rnw_dynamic_comments = 0
+if !exists("g:rnw_dynamic_comments") || (exists("g:rnw_dynamic_comments") && g:rnw_dynamic_comments == 1)
+  augroup RnwCStr
+    autocmd!
+    autocmd CursorMoved <buffer> call SetRnwCommentStr()
+  augroup END
+endif
+
 if exists('b:undo_ftplugin')
   let b:undo_ftplugin .= " | setl isk< sua< com< | unlet! b:browsefilter"
 else
diff --git a/runtime/ftplugin/rrst.vim b/runtime/ftplugin/rrst.vim
index a56fd64..19c67c4 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:	Sat Aug 15, 2020  12:02PM
+" Last Change:	Sun Apr 24, 2022  09:13AM
 " Original work by Alex Zvoleff
 
 " Only do this when not yet done for this buffer
@@ -38,7 +38,7 @@
 endif
 
 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" .
+  let b:browsefilter = "R Source Files (*.R *.Rnw *.Rd *.Rmd *.Rrst *.qmd)\t*.R;*.Rnw;*.Rd;*.Rmd;*.Rrst;*.qmd\n" .
         \ "All Files (*.*)\t*.*\n"
 endif