Clear bibfile cache when set of bibliography files change

Part of #9158

src/Buffer.cpp

@@ -2492,6 +2492,12 @@ void Buffer::checkIfBibInfoCacheIsValid() const
 }
 
 
+void Buffer::clearBibFileCache() const
+{
+	bibfileCache.clear();
+}
+
+
 void Buffer::reloadBibInfoCache(bool const force) const
 {
 	// use the master's cache
@@ -2511,7 +2517,7 @@ void Buffer::reloadBibInfoCache(bool const force) const
 	// FIXME Is this sufficient? Or should we also force that
 	// in some other cases? If so, then it is easy enough to
 	// add the following line in some other places.
-	bibfileCache.clear();
+	clearBibFileCache();
 	d->bibinfo_.clear();
 	FileNameList checkedFiles;
 	collectBibKeys(checkedFiles);

src/Buffer.h

@@ -500,6 +500,8 @@ public:
 	/// Calling this method invalidates the cache and so requires a
 	/// re-read.
 	void invalidateBibinfoCache() const;
+	/// Clear the bibfiles cache
+	void clearBibFileCache() const;
 	/// Updates the cached bibliography information, checking first to see
 	/// whether the cache is valid. If so, we do nothing. If not, then we
 	/// reload all the BibTeX info.

src/insets/InsetBibtex.cpp

@@ -105,6 +105,7 @@ void InsetBibtex::doDispatch(Cursor & cur, FuncRequest & cmd)
 
 		cur.recordUndo();
 		setParams(p);
+		cur.buffer()->clearBibFileCache();
 		cur.forceBufferUpdate();
 		break;
 	}