Wipe anyway if the sketch name has changed

solves arduino/Arduino#4862

Author: facchinm

Diff for: src/arduino.cc/builder/wipeout_build_path_if_build_options_changed.go

@@ -37,6 +37,7 @@ import (
 	"os"
 	"path/filepath"
 	"regexp"
+	"strings"
 )
 
 type WipeoutBuildPathIfBuildOptionsChanged struct{}
@@ -53,13 +54,16 @@ func (s *WipeoutBuildPathIfBuildOptionsChanged) Run(context map[string]interface
 		return nil
 	}
 
-	re := regexp.MustCompile("(?m)^.*" + constants.CTX_SKETCH_LOCATION + ".*$[\r\n]+")
-	buildOptionsJson = re.ReplaceAllString(buildOptionsJson, "")
-	previousBuildOptionsJson = re.ReplaceAllString(previousBuildOptionsJson, "")
+	sketchName := filepath.Base(context[constants.CTX_SKETCH_LOCATION].(string))
+	if (strings.Contains(previousBuildOptionsJson, sketchName)) {
+		re := regexp.MustCompile("(?m)^.*" + constants.CTX_SKETCH_LOCATION + ".*$[\r\n]+")
+		buildOptionsJson = re.ReplaceAllString(buildOptionsJson, "")
+		previousBuildOptionsJson = re.ReplaceAllString(previousBuildOptionsJson, "")
 
-	// if the only difference is the sketch path skip deleting everything
-	if buildOptionsJson == previousBuildOptionsJson {
-		return nil
+		// if the only difference is the sketch path skip deleting everything
+		if buildOptionsJson == previousBuildOptionsJson {
+			return nil
+		}
 	}
 
 	logger.Println(constants.LOG_LEVEL_INFO, constants.MSG_BUILD_OPTIONS_CHANGED)