Fix #247: Correct mime types validation

CHANGE.md

@@ -9,6 +9,7 @@ version 4.1.9
 5. (bug #243): Correct sending of `deleteExtraData`.
 6. (enh #244): Add Serbian translations.
 7. (enh #245): Allow initial caption to be set without initial preview.
+8. (bug #247): Correct mime types validation.
 
 version 4.1.8
 =============

js/fileinput.js

@@ -1595,7 +1595,7 @@
                 config = isSet(cat, self.previewSettings) ? self.previewSettings[cat] : defaultPreviewSettings[cat],
                 wrapLen = parseInt(self.wrapTextLength, 10), wrapInd = self.wrapIndicator,
                 chkTypes = types.indexOf(cat) >= 0, id, height,
-                chkMimes = isEmpty(mimes) || (!isEmpty(mimes) && isSet(file.type, mimes)),
+                chkMimes = isEmpty(mimes) || (!isEmpty(mimes) && mimes.indexOf(file.type) !== -1),
                 footer = self.renderFileFooter(caption, config.width), modal = '',
                 ind = previewId.slice(previewId.lastIndexOf('-') + 1);
             if (chkTypes && chkMimes) {