1 files changed, 94 insertions, 0 deletions
diff --git a/runtime/indent/dylan.vim b/runtime/indent/dylan.vim
new file mode 100644
index 0000000..e2a6d10
--- /dev/null
+++ b/runtime/indent/dylan.vim
@@ -0,0 +1,94 @@
+" Vim indent file
+" Language:	Dylan
+" Maintainer:	Brent A. Fulgham <bfulgham@debian.org> (Invalid email address)
+" 		Doug Kearns <dougkearns@gmail.com>
+" Version:	0.01
+" Last Change:	2022 Apr 06
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+  finish
+endif
+let b:did_indent = 1
+
+setlocal indentkeys+==~begin,=~block,=~case,=~cleanup,=~define,=~end,=~else,=~elseif,=~exception,=~for,=~finally,=~if,=~otherwise,=~select,=~unless,=~while
+
+" Define the appropriate indent function but only once
+setlocal indentexpr=DylanGetIndent()
+
+let b:undo_indent = "setl inde< indk<"
+
+if exists("*DylanGetIndent")
+  finish
+endif
+
+function DylanGetIndent()
+  " Get the line to be indented
+  let cline = getline(v:lnum)
+
+  " Don't reindent comments on first column
+  if cline =~ '^/\[/\*]'
+    return 0
+  endif
+
+  "Find the previous non-blank line
+  let lnum = prevnonblank(v:lnum - 1)
+  "Use zero indent at the top of the file
+  if lnum == 0
+    return 0
+  endif
+
+  let prevline=getline(lnum)
+  let ind = indent(lnum)
+  let chg = 0
+
+  " If previous line was a comment, use its indent
+  if prevline =~ '^\s*//'
+    return ind
+  endif
+
+  " If previous line was a 'define', indent
+  if prevline =~? '\(^\s*\(begin\|block\|case\|define\|else\|elseif\|for\|finally\|if\|select\|unless\|while\)\|\s*\S*\s*=>$\)'
+    let chg = shiftwidth()
+  " local methods indent the shift-width, plus 6 for the 'local'
+  elseif prevline =~? '^\s*local'
+    let chg = shiftwidth() + 6
+  " If previous line was a let with no closing semicolon, indent
+  elseif prevline =~? '^\s*let.*[^;]\s*$'
+    let chg = shiftwidth()
+  " If previous line opened a parenthesis, and did not close it, indent
+  elseif prevline =~ '^.*(\s*[^)]*\((.*)\)*[^)]*$'
+    return = match( prevline, '(.*\((.*)\|[^)]\)*.*$') + 1
+  "elseif prevline =~ '^.*(\s*[^)]*\((.*)\)*[^)]*$'
+  elseif prevline =~ '^[^(]*)\s*$'
+    " This line closes a parenthesis.  Find opening
+    let curr_line = prevnonblank(lnum - 1)
+    while curr_line >= 0
+      let str = getline(curr_line)
+      if str !~ '^.*(\s*[^)]*\((.*)\)*[^)]*$'
+	let curr_line = prevnonblank(curr_line - 1)
+      else
+	break
+      endif
+    endwhile
+    if curr_line < 0
+      return -1
+    endif
+    let ind = indent(curr_line)
+    " Although we found the closing parenthesis, make sure this
+    " line doesn't start with an indentable command:
+    let curr_str = getline(curr_line)
+    if curr_str =~? '^\s*\(begin\|block\|case\|define\|else\|elseif\|for\|finally\|if\|select\|unless\|while\)'
+      let chg = shiftwidth()
+    endif
+  endif
+
+  " If a line starts with end, un-indent (even if we just indented!)
+  if cline =~? '^\s*\(cleanup\|end\|else\|elseif\|exception\|finally\|otherwise\)'
+    let chg = chg - shiftwidth()
+  endif
+
+  return ind + chg
+endfunction
+
+" vim:sw=2 tw=130