Do not hardcode specific insets, but use a variable instead.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@37932 a592a061-630c-0410-9148-cb99ea01b6c8

src/Paragraph.cpp

@@ -3346,10 +3346,7 @@ int Paragraph::find(docstring const & str, bool cs, bool mw,
 	for (i = 0; i < strsize && pos < parsize; ++i, ++pos) {
 		// Ignore ligature break and hyphenation chars while searching
 		while (pos < parsize - 1 && isInset(pos)) {
-			const InsetSpecialChar *isc = dynamic_cast<const InsetSpecialChar*>(getInset(pos));
-			if (isc == 0
-			    || (isc->kind() != InsetSpecialChar::HYPHENATION
-				&& isc->kind() != InsetSpecialChar::LIGATURE_BREAK))
+			if (!getInset(pos)->skipOnSearch())
 				break;
 			pos++;
 		}

src/insets/Inset.h

@@ -402,6 +402,9 @@ public:
 	/// Is the content of this inset part of the output document?
 	virtual bool producesOutput() const { return true; }
 
+	/// Skip this inset while searching?
+	virtual bool skipOnSearch() const { return false; }
+
 	/// \return Tool tip for this inset.
 	/// This default implementation returns an empty string.
 	virtual docstring toolTip(BufferView const & bv, int x, int y) const;

src/insets/InsetSpecialChar.cpp

@@ -346,6 +346,12 @@ bool InsetSpecialChar::isLetter() const
 }
 
 
+bool InsetSpecialChar::skipOnSearch() const
+{
+	return kind_ == HYPHENATION || kind_ == LIGATURE_BREAK;
+}
+
+
 bool InsetSpecialChar::isLineSeparator() const
 {
 #if 0

src/insets/InsetSpecialChar.h

@@ -81,6 +81,8 @@ public:
 	bool isChar() const { return true; }
 	/// is this equivalent to a letter?
 	bool isLetter() const;
+	/// Skip this inset while searching?
+	bool skipOnSearch() const;
 	// should we break lines after this inset?
 	bool isLineSeparator() const;
 private: