1 files changed, 88 insertions, 0 deletions
diff --git a/runtime/indent/rmd.vim b/runtime/indent/rmd.vim
new file mode 100644
index 0000000..a043b0c
--- /dev/null
+++ b/runtime/indent/rmd.vim
@@ -0,0 +1,88 @@
+" Vim indent file
+" Language:	Rmd
+" Author:	Jakson Alves de Aquino <jalvesaq@gmail.com>
+" Homepage:     https://github.com/jalvesaq/R-Vim-runtime
+" Last Change:	Wed Nov 09, 2022  09:44PM
+
+
+" 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=GetRmdIndent()
+
+let b:undo_indent = "setl inde< indk<"
+
+if exists("*GetRmdIndent")
+  finish
+endif
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+" Simple Python indentation algorithm
+function s:GetPyIndent()
+  let plnum = prevnonblank(v:lnum - 1)
+  let pline = getline(plnum)
+  let cline = getline(v:lnum)
+  if pline =~ '^s```\s*{\s*python '
+    return 0
+  elseif pline =~ ':$'
+    return indent(plnum) + &shiftwidth
+  elseif cline =~ 'else:$'
+    return indent(plnum) - &shiftwidth
+  endif
+  return indent(plnum)
+endfunction
+
+function s:GetMdIndent()
+  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
+  elseif pline =~ '^\[\^\S\+\]: '
+    return indent(v:lnum - 1) + shiftwidth()
+  endif
+  return indent(prevnonblank(v:lnum - 1))
+endfunction
+
+function s:GetYamlIndent()
+  let plnum = prevnonblank(v:lnum - 1)
+  let pline = getline(plnum)
+  if pline =~ ':\s*$'
+    return indent(plnum) + shiftwidth()
+  elseif pline =~ '^\s*- '
+    return indent(v:lnum) + 2
+  endif
+  return indent(plnum)
+endfunction
+
+function GetRmdIndent()
+  if getline(".") =~ '^[ \t]*```{r .*}$' || getline(".") =~ '^[ \t]*```$'
+    return 0
+  endif
+  if search('^[ \t]*```{r', "bncW") > search('^[ \t]*```$', "bncW")
+    return s:RIndent()
+  elseif v:lnum > 1 && (search('^---$', "bnW") == 1 &&
+        \ (search('^---$', "nW") > v:lnum || search('^\.\.\.$', "nW") > v:lnum))
+    return s:GetYamlIndent()
+  elseif search('^[ \t]*```{python', "bncW") > search('^[ \t]*```$', "bncW")
+    return s:GetPyIndent()
+  else
+    return s:GetMdIndent()
+  endif
+endfunction
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+" vim: sw=2