Consistently apply regex escaping to quoteChar (#602)

papaparse.js

@@ -296,7 +296,7 @@ if (!Array.isArray)
 
 		unpackConfig();
 
-		var quoteCharRegex = new RegExp(_quoteChar, 'g');
+		var quoteCharRegex = new RegExp(escapeRegExp(_quoteChar), 'g');
 
 		if (typeof _input === 'string')
 			_input = JSON.parse(_input);
@@ -1438,7 +1438,7 @@ if (!Array.isArray)
 
 			var nextDelim = input.indexOf(delim, cursor);
 			var nextNewline = input.indexOf(newline, cursor);
-			var quoteCharRegex = new RegExp(escapeChar.replace(/[-[\]/{}()*+?.\\^$|]/g, '\\$&') + quoteChar, 'g');
+			var quoteCharRegex = new RegExp(escapeRegExp(escapeChar) + escapeRegExp(quoteChar), 'g');
 			var quoteSearch;
 
 			// Parser loop

tests/test-cases.js

@@ -1324,7 +1324,7 @@ var PARSE_TESTS = [
 		}
 	},
 	{
-		description: "Using reserved regex characters as quote characters",
+		description: "Using reserved regex character . as quote character",
 		input: '.a\na.,b\r\nc,d\r\ne,f\r\ng,h\r\ni,j',
 		config: { quoteChar: '.' },
 		expected: {
@@ -1339,6 +1339,22 @@ var PARSE_TESTS = [
 			}
 		}
 	},
+	{
+		description: "Using reserved regex character | as quote character",
+		input: '|a\na|,b\r\nc,d\r\ne,f\r\ng,h\r\ni,j',
+		config: { quoteChar: '|' },
+		expected: {
+			data: [['a\na', 'b'], ['c', 'd'], ['e', 'f'], ['g', 'h'], ['i', 'j']],
+			errors: [],
+			meta: {
+				linebreak: '\r\n',
+				delimiter: ',',
+				cursor: 27,
+				aborted: false,
+				truncated: false
+			}
+		}
+	},
 	{
 		description: "Parsing with skipEmptyLines set to 'greedy'",
 		notes: "Must parse correctly without lines with no content",