1 files changed, 39 insertions, 0 deletions
diff --git a/runtime/indent/readline.vim b/runtime/indent/readline.vim
new file mode 100644
index 0000000..0ab0f82
--- /dev/null
+++ b/runtime/indent/readline.vim
@@ -0,0 +1,39 @@
+" Vim indent file
+" Language:		readline configuration file
+" Maintainer:		Doug Kearns <dougkearns@gmail.com>
+" Previous Maintainer:	Nikolai Weibull <now@bitwi.se>
+" Last Change:		24 Sep 2021
+
+if exists("b:did_indent")
+  finish
+endif
+let b:did_indent = 1
+
+setlocal indentexpr=GetReadlineIndent()
+setlocal indentkeys=!^F,o,O,=$else,=$endif
+setlocal nosmartindent
+
+let b:undo_indent = "setl inde< indk< si<"
+
+if exists("*GetReadlineIndent")
+  finish
+endif
+
+function GetReadlineIndent()
+  let lnum = prevnonblank(v:lnum - 1)
+  if lnum == 0
+    return 0
+  endif
+
+  let ind = indent(lnum)
+
+  if getline(lnum) =~ '^\s*$\(if\|else\)\>'
+    let ind = ind + shiftwidth()
+  endif
+
+  if getline(v:lnum) =~ '^\s*$\(else\|endif\)\>'
+    let ind = ind - shiftwidth()
+  endif
+
+  return ind
+endfunction