Add caddyfile support, closes #195

indent/caddyfile.vim

@@ -0,0 +1,46 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'caddyfile') == -1
+  
+if exists('b:did_indent')
+	finish
+endif
+let b:did_indent = 1
+
+setlocal nolisp
+setlocal autoindent
+setlocal indentexpr=GetCaddyfileIndent(v:lnum)
+setlocal indentkeys+=<:>,0=},0=)
+" setlocal cindent
+
+if exists('*shiftwidth')
+	func s:sw()
+		return shiftwidth()
+	endfunc
+else
+	func s:sw()
+		return &sw
+	endfunc
+endif
+
+function! GetCaddyfileIndent(lnum)
+	let prevlnum = prevnonblank(a:lnum-1)
+	if prevlnum == 0
+		return 0
+	endif
+
+	let thisl = substitute(getline(a:lnum), '#.*$', '', '')
+	let prevl = substitute(getline(prevlnum), '#.*$', '', '')
+
+	let ind = indent(prevlnum)
+
+	if prevl =~ '{\s*$'
+		let ind += s:sw()
+	endif
+
+	if thisl =~ '^\s*}\s*$'
+		let ind -= s:sw()
+	endif
+
+	return ind
+endfunction
+
+endif