try to fix #406, no UI translation now for LANG=en_* (not only en_US)

Signed-off-by: Martin <Ho-Ro@users.noreply.github.com>

Author: Ho-Ro

CHANGELOG

@@ -1,3 +1,4 @@
+2025-03-08 (17d05f8): add persistent option "doNotTranslate" to bypass the localisation
 2025-03-04 (7b8942a): Show oversampling factor on top of screen
 2025-03-03 (3f42320): finetuning the build process - no OH6022 changes
 2025-03-03 (b174c4c): test for macos intel and arm64 build

openhantek/src/main.cpp

@@ -139,9 +139,8 @@ int main( int argc, char *argv[] ) {
         //////// Load translations for command line help texts ////////
         QTranslator qtTranslator;
         QTranslator parserTranslator;
-
-        if ( !doNotTranslate && useLocale &&
-             QLocale().name() != "en_US" ) { // somehow Qt on MacOS uses the german translation for en_US?!
+        // feedback from a mac user: "somehow Qt on MacOS uses the german translation for en_US?!"
+        if ( !doNotTranslate && useLocale && QLocale().name().left( 3 ) != "en_" ) { // l18n only in these cases
             if ( qtTranslator.load( "qt_" + QLocale().name(), QLibraryInfo::location( QLibraryInfo::TranslationsPath ) ) ) {
                 parserApp.installTranslator( &qtTranslator );
             }