Add odin support, closes #544

indent/odin.vim

@@ -0,0 +1,41 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'odin') == -1
+
+if exists("b:did_indent")
+  finish
+endif
+let b:did_indent = 1
+
+setlocal nosmartindent
+setlocal nolisp
+setlocal autoindent
+
+setlocal indentexpr=GetOdinIndent(v:lnum)
+
+if exists("*GetOdinIndent")
+  finish
+endif
+
+function! GetOdinIndent(lnum)
+  let prev = prevnonblank(a:lnum-1)
+
+  if prev == 0
+    return 0
+  endif
+
+  let prevline = getline(prev)
+  let line = getline(a:lnum)
+
+  let ind = indent(prev)
+
+  if prevline =~ '[({]\s*$'
+    let ind += &sw
+  endif
+
+  if line =~ '^\s*[)}]'
+    let ind -= &sw
+  endif
+
+  return ind
+endfunction
+
+endif