diff -up fltk-1.3.4-2/src/Fl_cocoa.mm.macos_im fltk-1.3.4-2/src/Fl_cocoa.mm
--- fltk-1.3.4-2/src/Fl_cocoa.mm.macos_im	2019-04-04 11:03:44.776519297 +0200
+++ fltk-1.3.4-2/src/Fl_cocoa.mm	2019-04-04 11:32:34.463707790 +0200
@@ -135,8 +135,11 @@ typedef OSStatus (*TSMSetDocumentPropert
 static TSMSetDocumentProperty_type TSMSetDocumentProperty;
 typedef OSStatus (*TSMRemoveDocumentProperty_type)(TSMDocumentID, OSType);
 static TSMRemoveDocumentProperty_type TSMRemoveDocumentProperty;
-typedef CFArrayRef (*TISCreateASCIICapableInputSourceList_type)(void);
-static TISCreateASCIICapableInputSourceList_type TISCreateASCIICapableInputSourceList;
+typedef CFArrayRef (*TISCreateInputSourceList_type)(CFDictionaryRef, Boolean);
+static TISCreateInputSourceList_type TISCreateInputSourceList;
+
+static CFStringRef kTISTypeKeyboardLayout;
+static CFStringRef kTISPropertyInputSourceType;
 
 typedef void (*KeyScript_type)(short);
 static KeyScript_type KeyScript;
@@ -1568,9 +1571,18 @@ static FLWindowDelegate *flwindowdelegat
       if (im_enabled)
         TSMRemoveDocumentProperty(doc, kTSMDocumentEnabledInputSourcesPropertyTag);
       else {
+        CFDictionaryRef filter;
         CFArrayRef inputSources;
-        
-        inputSources = TISCreateASCIICapableInputSourceList();
+
+        // Browsers like to use TISCreateASCIICapableInputSourceList(),
+        // which mostly hits the mark. But it excludes things like Greek
+        // and Cyrillic keyboards. So let's be more explicit.
+        filter = CFDictionaryCreate(NULL, 
+                                    (const void **)kTISPropertyInputSourceType, 
+                                    (const void **)kTISTypeKeyboardLayout,
+                                    1, NULL, NULL);
+        inputSources = TISCreateInputSourceList(filter, false);
+        CFRelease(filter);
         TSMSetDocumentProperty(doc, kTSMDocumentEnabledInputSourcesPropertyTag,
                                sizeof(CFArrayRef), &inputSources);
         CFRelease(inputSources);
@@ -1829,8 +1841,10 @@ static int input_method_startup()
       TSMGetActiveDocument = (TSMGetActiveDocument_type)Fl_X::get_carbon_function("TSMGetActiveDocument");
       TSMSetDocumentProperty = (TSMSetDocumentProperty_type)Fl_X::get_carbon_function("TSMSetDocumentProperty");
       TSMRemoveDocumentProperty = (TSMRemoveDocumentProperty_type)Fl_X::get_carbon_function("TSMRemoveDocumentProperty");
-      TISCreateASCIICapableInputSourceList = (TISCreateASCIICapableInputSourceList_type)Fl_X::get_carbon_function("TISCreateASCIICapableInputSourceList");
-      retval = (TSMGetActiveDocument && TSMSetDocumentProperty && TSMRemoveDocumentProperty && TISCreateASCIICapableInputSourceList ? 1 : 0);
+      TISCreateInputSourceList = (TISCreateInputSourceList_type)Fl_X::get_carbon_function("TISCreateInputSourceList");
+      kTISTypeKeyboardLayout = (CFStringRef)Fl_X::get_carbon_function("kTISTypeKeyboardLayout");
+      kTISPropertyInputSourceType = (CFStringRef)Fl_X::get_carbon_function("kTISPropertyInputSourceType");
+      retval = (TSMGetActiveDocument && TSMSetDocumentProperty && TSMRemoveDocumentProperty && TISCreateInputSourceList && kTISTypeKeyboardLayout && kTISPropertyInputSourceType ? 1 : 0);
     } else {
       KeyScript = (KeyScript_type)Fl_X::get_carbon_function("KeyScript");
       retval = (KeyScript? 1 : 0);