Use a more strict regexp / fix unit-test

Author: cmaglie

internal/arduino/builder/internal/detector/detector.go

@@ -477,8 +477,7 @@ func (l *SketchLibrariesDetector) failIfImportedLibraryIsWrong() error {
 	return nil
 }
 
-// includeRegexp fixdoc
-var includeRegexp = regexp.MustCompile(`#include[ \t]*[<"](\S+)[">]`)
+var includeRegexp = regexp.MustCompile(`(?ms)^\s*[0-9 |]*\s*#[ \t]*include\s*[<"](\S+)[">]`)
 
 // IncludesFinderWithRegExp fixdoc
 func IncludesFinderWithRegExp(source string) string {

internal/arduino/builder/internal/detector/detector_test.go

@@ -77,9 +77,9 @@ func TestIncludesFinderWithRegExpPaddedIncludes4(t *testing.T) {
 }
 
 func TestIncludesFinderWithRegExpPaddedIncludes5(t *testing.T) {
-	output := "/some/path/sketch.ino:23:42: fatal error: 'Foobar.h' file not found" +
-		"   23 | #include \"Foobar.h\"" +
-		"      |          ^~~~~~~~~~"
+	output := "/some/path/sketch.ino:23:42: fatal error: 'Foobar.h' file not found\n" +
+		"   23 | #include \"Foobar.h\"\n" +
+		"      |          ^~~~~~~~~~\n"
 
 	include := detector.IncludesFinderWithRegExp(output)