Allow escaping quotes in HCL string [GH-14]

decoder_test.go

@@ -43,6 +43,13 @@ func TestDecode_interface(t *testing.T) {
 				},
 			},
 		},
+		{
+			"escape.hcl",
+			false,
+			map[string]interface{}{
+				"foo": "bar\"baz",
+			},
+		},
 		{
 			"multiline_bad.hcl",
 			false,

hcl/lex.go

@@ -357,6 +357,19 @@ func (x *hclLex) lexString(yylval *hclSymType) int {
 			return lexEOF
 		}
 
+		// If we're escaping a quote, then escape the quote
+		if c == '\\' {
+			n := x.next()
+			switch n {
+			case '"':
+				c = n
+			case 'n':
+				c = '\n'
+			default:
+				x.backup()
+			}
+		}
+
 		// If we're starting into variable, mark it
 		if braces == 0 && c == '$' && x.peek() == '{' {
 			braces += 1

test-fixtures/escape.hcl

@@ -0,0 +1 @@
+foo = "bar\"baz"