Add functionality for escaping quote characters.

README.md

@@ -114,6 +114,12 @@ Foo = "ba"r"
 # Gets parsed as "bar"
 ```
 
+If a string containing double quotes is desired, they can be escaped:
+```bash
+Foo = "ba\"r"
+# Gets parsed as "ba"r"
+```
+
 #### Lists of key-values
 
 Often a simple Key => Value mapping is not sufficient, and you want a

config.go

@@ -70,7 +70,14 @@ func parseVal(rawVal string) (*string, error) {
 		val = val[:groups[2*2]]
 	}
 
-	val = strings.ReplaceAll(val, "\"", "")
+	// Remove all '"', and replace '\"' with '"'
+	if val[0] == '"' {
+		val = val[1:]
+	}
+	nonEscapedQuotes := regexp.MustCompile(`[^\\]"`)
+	val = nonEscapedQuotes.ReplaceAllStringFunc(val, func(s string) string { return s[:len(s)-1] })
+	val = strings.ReplaceAll(val, `\"`, `"`)
+
 	return &val, nil
 }
 

config_test.go

@@ -390,3 +390,27 @@ Could not parse config correctly with wierd syntax correctly.
 	got:      %#v`, want, config)
 	}
 }
+
+func TestEscapedQuote(t *testing.T) {
+	type Config struct {
+		Foo string
+	}
+
+	config := Config{
+		Foo: "",
+	}
+	err := LoadConfig("test_configs/escapedquote.cfg", &config)
+	if err != nil {
+		t.Fatalf("Could not parse config with escaped quote: %s", err.Error())
+	}
+
+	want := Config{
+		Foo: "hel\"lo",
+	}
+	if want != config {
+		t.Fatalf(`
+Could not parse config correctly with quotes inside correctly.
+	expected: %#v
+	got:      %#v`, want, config)
+	}
+}

test_configs/escapedquote.cfg

@@ -0,0 +1 @@
+Foo = hel\"lo