1 files changed, 49 insertions, 0 deletions
diff --git a/runtime/indent/rrst.vim b/runtime/indent/rrst.vim
new file mode 100644
index 0000000..585c5e6
--- /dev/null
+++ b/runtime/indent/rrst.vim
@@ -0,0 +1,49 @@
+" Vim indent file
+" Language:	Rrst
+" Author:	Jakson Alves de Aquino <jalvesaq@gmail.com>
+" Homepage:     https://github.com/jalvesaq/R-Vim-runtime
+" Last Change:	Feb 25, 2023
+
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+  finish
+endif
+runtime indent/r.vim
+let s:RIndent = function(substitute(&indentexpr, "()", "", ""))
+let b:did_indent = 1
+
+setlocal indentkeys=0{,0},:,!^F,o,O,e
+setlocal indentexpr=GetRrstIndent()
+
+let b:undo_indent = "setl inde< indk<"
+
+if exists("*GetRrstIndent")
+  finish
+endif
+
+function GetRstIndent()
+  let pline = getline(v:lnum - 1)
+  let cline = getline(v:lnum)
+  if prevnonblank(v:lnum - 1) < v:lnum - 1 || cline =~ '^\s*[-\+\*]\s' || cline =~ '^\s*\d\+\.\s\+'
+    return indent(v:lnum)
+  elseif pline =~ '^\s*[-\+\*]\s'
+    return indent(v:lnum - 1) + 2
+  elseif pline =~ '^\s*\d\+\.\s\+'
+    return indent(v:lnum - 1) + 3
+  endif
+  return indent(prevnonblank(v:lnum - 1))
+endfunction
+
+function GetRrstIndent()
+  if getline(".") =~ '^\.\. {r .*}$' || getline(".") =~ '^\.\. \.\.$'
+    return 0
+  endif
+  if search('^\.\. {r', "bncW") > search('^\.\. \.\.$', "bncW")
+    return s:RIndent()
+  else
+    return GetRstIndent()
+  endif
+endfunction
+
+" vim: sw=2