X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Flyxfind.cpp;h=33dbd8a9d49c369db205aca549f85021db5367e8;hb=d1ca207e946c90c200353cd848f973f4ee659792;hp=63500a83254c1cbe68b8090cecf20af301f960f0;hpb=d3e4bfb12441b1a63c52b57634c4fc709b526206;p=lyx.git

diff --git a/src/lyxfind.cpp b/src/lyxfind.cpp
index 63500a8325..33dbd8a9d4 100644
--- a/src/lyxfind.cpp
+++ b/src/lyxfind.cpp
@@ -33,12 +33,14 @@
 #include "TexRow.h"
 #include "Text.h"
 
+#include "frontends/Application.h"
 #include "frontends/alert.h"
 
 #include "mathed/InsetMath.h"
 #include "mathed/InsetMathGrid.h"
 #include "mathed/InsetMathHull.h"
 #include "mathed/MathStream.h"
+#include "mathed/MathSupport.h"
 
 #include "support/convert.h"
 #include "support/debug.h"
@@ -67,7 +69,7 @@ bool parse_bool(docstring & howto)
 }
 
 
-class MatchString : public binary_function<Paragraph, pos_type, bool>
+class MatchString : public binary_function<Paragraph, pos_type, int>
 {
 public:
 	MatchString(docstring const & str, bool cs, bool mw)
@@ -76,7 +78,7 @@ public:
 
 	// returns true if the specified string is at the specified position
 	// del specifies whether deleted strings in ct mode will be considered
-	bool operator()(Paragraph const & par, pos_type pos, bool del = true) const
+	int operator()(Paragraph const & par, pos_type pos, bool del = true) const
 	{
 		return par.find(str, case_sens, whole_words, pos, del);
 	}
@@ -91,27 +93,31 @@ private:
 };
 
 
-bool findForward(DocIterator & cur, MatchString const & match,
-		 bool find_del = true)
+int findForward(DocIterator & cur, MatchString const & match,
+		bool find_del = true)
 {
 	for (; cur; cur.forwardChar())
-		if (cur.inTexted() &&
-		    match(cur.paragraph(), cur.pos(), find_del))
-			return true;
-	return false;
+		if (cur.inTexted()) {
+			int len = match(cur.paragraph(), cur.pos(), find_del);
+			if (len > 0)
+				return len;
+		}
+	return 0;
 }
 
 
-bool findBackwards(DocIterator & cur, MatchString const & match,
-		 bool find_del = true)
+int findBackwards(DocIterator & cur, MatchString const & match,
+		  bool find_del = true)
 {
 	while (cur) {
 		cur.backwardChar();
-		if (cur.inTexted() &&
-		    match(cur.paragraph(), cur.pos(), find_del))
-			return true;
+		if (cur.inTexted()) {
+			int len = match(cur.paragraph(), cur.pos(), find_del);
+			if (len > 0)
+				return len;
+		}
 	}
-	return false;
+	return 0;
 }
 
 
@@ -143,7 +149,7 @@ bool searchAllowed(docstring const & str)
 
 
 bool findOne(BufferView * bv, docstring const & searchstr,
-	bool case_sens, bool whole, bool forward, bool find_del = true)
+	     bool case_sens, bool whole, bool forward, bool find_del = true)
 {
 	if (!searchAllowed(searchstr))
 		return false;
@@ -152,13 +158,14 @@ bool findOne(BufferView * bv, docstring const & searchstr,
 
 	MatchString const match(searchstr, case_sens, whole);
 
-	bool found = forward ? findForward(cur, match, find_del) :
-			  findBackwards(cur, match, find_del);
+	int match_len = forward
+		? findForward(cur, match, find_del)
+		: findBackwards(cur, match, find_del);
 
-	if (found)
-		bv->putSelectionAt(cur, searchstr.length(), !forward);
+	if (match_len > 0)
+		bv->putSelectionAt(cur, match_len, !forward);
 
-	return found;
+	return match_len > 0;
 }
 
 
@@ -181,24 +188,26 @@ int replaceAll(BufferView * bv,
 
 	Cursor cur(*bv);
 	cur.setCursor(doc_iterator_begin(&buf));
-	while (findForward(cur, match, false)) {
+	int match_len = findForward(cur, match, false);
+	while (match_len > 0) {
 		// Backup current cursor position and font.
 		pos_type const pos = cur.pos();
 		Font const font = cur.paragraph().getFontSettings(buf.params(), pos);
 		cur.recordUndo();
-		int striked = ssize - cur.paragraph().eraseChars(pos, pos + ssize,
-							    buf.params().trackChanges);
+		int striked = ssize -
+			cur.paragraph().eraseChars(pos, pos + match_len,
+						   buf.params().trackChanges);
 		cur.paragraph().insert(pos, replacestr, font,
-				       Change(buf.params().trackChanges ?
-					      Change::INSERTED : Change::UNCHANGED));
+				       Change(buf.params().trackChanges
+					      ? Change::INSERTED
+					      : Change::UNCHANGED));
 		for (int i = 0; i < rsize + striked; ++i)
 			cur.forwardChar();
 		++num;
+		match_len = findForward(cur, match, false);
 	}
 
 	bv->putSelectionAt(doc_iterator_begin(&buf), 0, false);
-	if (num)
-		buf.markDirty();
 
 	cur_orig.fixIfBroken();
 	bv->setCursor(cur_orig);
@@ -207,55 +216,81 @@ int replaceAll(BufferView * bv,
 }
 
 
-bool stringSelected(BufferView * bv, docstring & searchstr,
-		    bool case_sens, bool whole, bool forward)
+// the idea here is that we are going to replace the string that
+// is selected IF it is the search string. 
+// if there is a selection, but it is not the search string, then
+// we basically ignore it. (FIXME We ought to replace only within
+// the selection.)
+// if there is no selection, then:
+//  (i) if some search string has been provided, then we find it.
+//      (think of how the dialog works when you hit "replace" the
+//      first time.) 
+// (ii) if no search string has been provided, then we treat the
+//      word the cursor is in as the search string. (why? i have no
+//      idea.) but this only works in text?
+//
+// returns the number of replacements made (one, if any) and 
+// whether anything at all was done.
+pair<bool, int> replaceOne(BufferView * bv, docstring searchstr,
+			   docstring const & replacestr, bool case_sens,
+			   bool whole, bool forward, bool findnext)
 {
-	// if nothing selected and searched string is empty, this
-	// means that we want to search current word at cursor position,
-	// but only if we are in texted() mode.
-	if (!bv->cursor().selection() && searchstr.empty()
-	    && bv->cursor().inTexted()) {
-		bv->cursor().innerText()->selectWord(bv->cursor(), WHOLE_WORD);
-		searchstr = bv->cursor().selectionAsString(false);
-		return true;
+	Cursor & cur = bv->cursor();
+	if (!cur.selection()) {
+		// no selection, non-empty search string: find it
+		if (!searchstr.empty()) {
+			findOne(bv, searchstr, case_sens, whole, forward);
+			return make_pair(true, 0);
+		}
+		// empty search string
+		if (!cur.inTexted())
+			// bail in math
+			return make_pair(false, 0);
+		// select current word and treat it as the search string
+		cur.innerText()->selectWord(cur, WHOLE_WORD);
+		searchstr = cur.selectionAsString(false);
 	}
-
-	// if nothing selected or selection does not equal search string
-	// then search and select next occurence and return
-	docstring const str2 = bv->cursor().selectionAsString(false);
-	if ((case_sens && searchstr != str2) 
-	    || compare_no_case(searchstr, str2) != 0) {
+	
+	// if we still don't have a search string, report the error
+	// and abort.
+	if (!searchAllowed(searchstr))
+		return make_pair(false, 0);
+	
+	bool have_selection = cur.selection();
+	docstring const selected = cur.selectionAsString(false);
+	bool match = 
+		case_sens
+		? searchstr == selected
+		: compare_no_case(searchstr, selected) == 0;
+
+	// no selection or current selection is not search word:
+	// just find the search word
+	if (!have_selection || !match) {
 		findOne(bv, searchstr, case_sens, whole, forward);
-		return false;
+		return make_pair(true, 0);
 	}
 
-	return true;
-}
-
-
-int replaceOne(BufferView * bv, docstring & searchstr,
-	    docstring const & replacestr, bool case_sens, 
-			bool whole, bool forward)
-{
-	if (!stringSelected(bv, searchstr, case_sens, whole, forward))
-		return 0;
-
-	if (!searchAllowed(searchstr) || bv->buffer().isReadonly())
-		return 0;
+	// we're now actually ready to replace. if the buffer is
+	// read-only, we can't, though.
+	if (bv->buffer().isReadonly())
+		return make_pair(false, 0);
 
-	Cursor & cur = bv->cursor();
-	cap::replaceSelectionWithString(cur, replacestr, forward);
-	bv->buffer().markDirty();
-	findOne(bv, searchstr, case_sens, whole, forward, false);
+	cap::replaceSelectionWithString(cur, replacestr);
+	if (forward) {
+		cur.pos() += replacestr.length();
+		LASSERT(cur.pos() <= cur.lastpos(), /* */);
+	}
+	if (findnext)
+		findOne(bv, searchstr, case_sens, whole, forward, false);
 
-	return 1;
+	return make_pair(true, 1);
 }
 
 } // namespace anon
 
 
 docstring const find2string(docstring const & search,
-			 bool casesensitive, bool matchword, bool forward)
+			    bool casesensitive, bool matchword, bool forward)
 {
 	odocstringstream ss;
 	ss << search << '\n'
@@ -267,8 +302,9 @@ docstring const find2string(docstring const & search,
 
 
 docstring const replace2string(docstring const & replace,
-	docstring const & search, bool casesensitive, bool matchword,
-	bool all, bool forward)
+			       docstring const & search,
+			       bool casesensitive, bool matchword,
+			       bool all, bool forward, bool findnext)
 {
 	odocstringstream ss;
 	ss << replace << '\n'
@@ -276,7 +312,8 @@ docstring const replace2string(docstring const & replace,
 	   << int(casesensitive) << ' '
 	   << int(matchword) << ' '
 	   << int(all) << ' '
-	   << int(forward);
+	   << int(forward) << ' '
+	   << int(findnext);
 	return ss.str();
 }
 
@@ -302,18 +339,16 @@ bool lyxfind(BufferView * bv, FuncRequest const & ev)
 }
 
 
-bool lyxreplace(BufferView * bv, FuncRequest const & ev, bool has_deleted)
+bool lyxreplace(BufferView * bv, 
+		FuncRequest const & ev, bool has_deleted)
 {
 	if (!bv || ev.action() != LFUN_WORD_REPLACE)
 		return false;
 
-	// assume we didn't do anything
-	bool retval = false;
-	
 	// data is of the form
 	// "<search>
 	//  <replace>
-	//  <casesensitive> <matchword> <all> <forward>"
+	//  <casesensitive> <matchword> <all> <forward> <findnext>"
 	docstring search;
 	docstring rplc;
 	docstring howto = split(ev.argument(), rplc, '\n');
@@ -323,36 +358,46 @@ bool lyxreplace(BufferView * bv, FuncRequest const & ev, bool has_deleted)
 	bool matchword     = parse_bool(howto);
 	bool all           = parse_bool(howto);
 	bool forward       = parse_bool(howto);
+	bool findnext      = howto.empty() ? true : parse_bool(howto);
+
+	int replace_count = 0;
+	bool update = false;
 
 	if (!has_deleted) {
-		int const replace_count = all
-			? replaceAll(bv, search, rplc, casesensitive, matchword)
-			: replaceOne(bv, search, rplc, casesensitive, matchword, forward);
+		if (all) {
+			replace_count = replaceAll(bv, search, rplc, casesensitive, matchword);
+			update = replace_count > 0;
+		} else {
+			pair<bool, int> rv =
+				replaceOne(bv, search, rplc, casesensitive, matchword, forward, findnext);
+			update = rv.first;
+			replace_count = rv.second;
+		}
 
-		Buffer & buf = bv->buffer();
-		if (replace_count == 0) {
+		Buffer const & buf = bv->buffer();
+		if (!update) {
 			// emit message signal.
 			buf.message(_("String not found!"));
 		} else {
-			retval = true;
-			if (replace_count == 1) {
-				// emit message signal.
+			if (replace_count == 0) {
+				buf.message(_("String found."));
+			} else if (replace_count == 1) {
 				buf.message(_("String has been replaced."));
 			} else {
-				docstring str = bformat(_("%1$d strings have been replaced."), replace_count);
-				// emit message signal.
+				docstring const str = 
+					bformat(_("%1$d strings have been replaced."), replace_count);
 				buf.message(str);
 			}
 		}
-	} else {
+	} else if (findnext) {
 		// if we have deleted characters, we do not replace at all, but
 		// rather search for the next occurence
 		if (findOne(bv, search, casesensitive, matchword, forward))
-			retval = true;
+			update = true;
 		else
 			bv->message(_("String not found!"));
 	}
-	return retval;
+	return update;
 }
 
 
@@ -447,37 +492,65 @@ namespace {
 typedef vector<pair<string, string> > Escapes;
 
 /// A map of symbols and their escaped equivalent needed within a regex.
+/// @note Beware of order
 Escapes const & get_regexp_escapes()
 {
+	typedef std::pair<std::string, std::string> P;
+
 	static Escapes escape_map;
 	if (escape_map.empty()) {
-		escape_map.push_back(pair<string, string>("\\", "\\\\"));
-		escape_map.push_back(pair<string, string>("^", "\\^"));
-		escape_map.push_back(pair<string, string>("$", "\\$"));
-		escape_map.push_back(pair<string, string>("{", "\\{"));
-		escape_map.push_back(pair<string, string>("}", "\\}"));
-		escape_map.push_back(pair<string, string>("[", "\\["));
-		escape_map.push_back(pair<string, string>("]", "\\]"));
-		escape_map.push_back(pair<string, string>("(", "\\("));
-		escape_map.push_back(pair<string, string>(")", "\\)"));
-		escape_map.push_back(pair<string, string>("+", "\\+"));
-		escape_map.push_back(pair<string, string>("*", "\\*"));
-		escape_map.push_back(pair<string, string>(".", "\\."));
+		escape_map.push_back(P("$", "_x_$"));
+		escape_map.push_back(P("{", "_x_{"));
+		escape_map.push_back(P("}", "_x_}"));
+		escape_map.push_back(P("[", "_x_["));
+		escape_map.push_back(P("]", "_x_]"));
+		escape_map.push_back(P("(", "_x_("));
+		escape_map.push_back(P(")", "_x_)"));
+		escape_map.push_back(P("+", "_x_+"));
+		escape_map.push_back(P("*", "_x_*"));
+		escape_map.push_back(P(".", "_x_."));
+		escape_map.push_back(P("\\", "(?:\\\\|\\\\backslash)"));
+		escape_map.push_back(P("~", "(?:\\\\textasciitilde|\\\\sim)"));
+		escape_map.push_back(P("^", "(?:\\^|\\\\textasciicircum\\{\\}|\\\\mathcircumflex)"));
+		escape_map.push_back(P("_x_", "\\"));
 	}
 	return escape_map;
 }
 
 /// A map of lyx escaped strings and their unescaped equivalent.
-Escapes const & get_lyx_unescapes() {
+Escapes const & get_lyx_unescapes()
+{
+	typedef std::pair<std::string, std::string> P;
+
 	static Escapes escape_map;
 	if (escape_map.empty()) {
-		escape_map.push_back(pair<string, string>("{*}", "*"));
-		escape_map.push_back(pair<string, string>("{[}", "["));
-		escape_map.push_back(pair<string, string>("\\$", "$"));
-		escape_map.push_back(pair<string, string>("\\backslash{}", "\\"));
-		escape_map.push_back(pair<string, string>("\\backslash", "\\"));
-		escape_map.push_back(pair<string, string>("\\sim ", "~"));
-		escape_map.push_back(pair<string, string>("\\^", "^"));
+		escape_map.push_back(P("\\%", "%"));
+		escape_map.push_back(P("\\mathcircumflex ", "^"));
+		escape_map.push_back(P("\\mathcircumflex", "^"));
+		escape_map.push_back(P("\\backslash ", "\\"));
+		escape_map.push_back(P("\\backslash", "\\"));
+		escape_map.push_back(P("\\\\{", "_x_<"));
+		escape_map.push_back(P("\\\\}", "_x_>"));
+		escape_map.push_back(P("\\sim ", "~"));
+		escape_map.push_back(P("\\sim", "~"));
+	}
+	return escape_map;
+}
+
+/// A map of escapes turning a regexp matching text to one matching latex.
+Escapes const & get_regexp_latex_escapes()
+{
+	typedef std::pair<std::string, std::string> P;
+
+	static Escapes escape_map;
+	if (escape_map.empty()) {
+		escape_map.push_back(P("\\\\", "(?:\\\\\\\\|\\\\backslash|\\\\textbackslash\\{\\})"));
+		escape_map.push_back(P("(<?!\\\\\\\\textbackslash)\\{", "\\\\\\{"));
+		escape_map.push_back(P("(<?!\\\\\\\\textbackslash\\\\\\{)\\}", "\\\\\\}"));
+		escape_map.push_back(P("\\[", "\\{\\[\\}"));
+		escape_map.push_back(P("\\]", "\\{\\]\\}"));
+		escape_map.push_back(P("\\^", "(?:\\^|\\\\textasciicircum\\{\\}|\\\\mathcircumflex)"));
+		escape_map.push_back(P("%", "\\\\\\%"));
 	}
 	return escape_map;
 }
@@ -494,7 +567,7 @@ string apply_escapes(string s, Escapes const & escape_map)
 		unsigned int pos = 0;
 		while (pos < s.length() && (pos = s.find(it->first, pos)) < s.length()) {
 			s.replace(pos, it->first.length(), it->second);
-//			LYXERR(Debug::FIND, "After escape: " << s);
+			LYXERR(Debug::FIND, "After escape: " << s);
 			pos += it->second.length();
 //			LYXERR(Debug::FIND, "pos: " << pos);
 		}
@@ -503,58 +576,47 @@ string apply_escapes(string s, Escapes const & escape_map)
 	return s;
 }
 
-/** Return the position of the closing brace matching the open one at s[pos],
- ** or s.size() if not found.
- **/
-size_t find_matching_brace(string const & s, size_t pos)
-{
-	LASSERT(s[pos] == '{', /* */);
-	int open_braces = 1;
-	for (++pos; pos < s.size(); ++pos) {
-		if (s[pos] == '\\')
-			++pos;
-		else if (s[pos] == '{')
-			++open_braces;
-		else if (s[pos] == '}') {
-			--open_braces;
-			if (open_braces == 0)
-				return pos;
-		}
-	}
-	return s.size();
-}
 
-/// Within \regexp{} apply get_regex_escapes(), while outside apply get_lyx_unescapes().
-string escape_for_regex(string s)
+/// Within \regexp{} apply get_lyx_unescapes() only (i.e., preserve regexp semantics of the string),
+/// while outside apply get_lyx_unescapes()+get_regexp_escapes().
+/// If match_latex is true, then apply regexp_latex_escapes() to \regexp{} contents as well.
+string escape_for_regex(string s, bool match_latex)
 {
 	size_t pos = 0;
 	while (pos < s.size()) {
-		size_t new_pos = s.find("\\regexp{{{", pos);
+		size_t new_pos = s.find("\\regexp{", pos);
 		if (new_pos == string::npos)
 			new_pos = s.size();
 		LYXERR(Debug::FIND, "new_pos: " << new_pos);
 		string t = apply_escapes(s.substr(pos, new_pos - pos), get_lyx_unescapes());
-		LYXERR(Debug::FIND, "t      : " << t);
+		LYXERR(Debug::FIND, "t [lyx]: " << t);
 		t = apply_escapes(t, get_regexp_escapes());
-		LYXERR(Debug::FIND, "t      : " << t);
+		LYXERR(Debug::FIND, "t [rxp]: " << t);
 		s.replace(pos, new_pos - pos, t);
 		new_pos = pos + t.size();
 		LYXERR(Debug::FIND, "Regexp after escaping: " << s);
 		LYXERR(Debug::FIND, "new_pos: " << new_pos);
 		if (new_pos == s.size())
 			break;
-		size_t end_pos = s.find("}}}", new_pos + 10); // find_matching_brace(s, new_pos + 7);
+		// Might fail if \\endregexp{} is preceeded by unexpected stuff (weird escapes)
+		size_t end_pos = s.find("\\endregexp{}}", new_pos + 8);
 		LYXERR(Debug::FIND, "end_pos: " << end_pos);
-		t = apply_escapes(s.substr(new_pos + 10, end_pos - (new_pos + 10)), get_lyx_unescapes());
-		LYXERR(Debug::FIND, "t      : " << t);
+		t = s.substr(new_pos + 8, end_pos - (new_pos + 8));
+		LYXERR(Debug::FIND, "t in regexp      : " << t);
+		t = apply_escapes(t, get_lyx_unescapes());
+		LYXERR(Debug::FIND, "t in regexp [lyx]: " << t);
+		if (match_latex) {
+			t = apply_escapes(t, get_regexp_latex_escapes());
+			LYXERR(Debug::FIND, "t in regexp [ltx]: " << t);
+		}
 		if (end_pos == s.size()) {
 			s.replace(new_pos, end_pos - new_pos, t);
 			pos = s.size();
 			LYXERR(Debug::FIND, "Regexp after \\regexp{} removal: " << s);
 			break;
 		}
-		s.replace(new_pos, end_pos + 3 - new_pos, t);
-		LYXERR(Debug::FIND, "Regexp after \\regexp{} removal: " << s);
+		s.replace(new_pos, end_pos + 13 - new_pos, t);
+		LYXERR(Debug::FIND, "Regexp after \\regexp{...\\endregexp{}} removal: " << s);
 		pos = new_pos + t.size();
 		LYXERR(Debug::FIND, "pos: " << pos);
 	}
@@ -563,7 +625,7 @@ string escape_for_regex(string s)
 
 /// Wrapper for lyx::regex_replace with simpler interface
 bool regex_replace(string const & s, string & t, string const & searchstr,
-	string const & replacestr)
+		   string const & replacestr)
 {
 	lyx::regex e(searchstr);
 	ostringstream oss;
@@ -607,10 +669,10 @@ bool braces_match(string::const_iterator const & beg,
 		}
 	}
 	if (open_pars != unmatched) {
-	  LYXERR(Debug::FIND, "Found " << open_pars 
-		 << " instead of " << unmatched 
-		 << " unmatched open braces at the end of count");
-			return false;
+		LYXERR(Debug::FIND, "Found " << open_pars 
+		       << " instead of " << unmatched 
+		       << " unmatched open braces at the end of count");
+		return false;
 	}
 	LYXERR(Debug::FIND, "Braces match as expected");
 	return true;
@@ -659,64 +721,152 @@ private:
 	 ** @todo Normalization should also expand macros, if the corresponding
 	 ** search option was checked.
 	 **/
-	string normalize(docstring const & s) const;
+	string normalize(docstring const & s, bool hack_braces) const;
 	// normalized string to search
 	string par_as_string;
 	// regular expression to use for searching
 	lyx::regex regexp;
 	// same as regexp, but prefixed with a ".*"
 	lyx::regex regexp2;
+	// leading format material as string
+	string lead_as_string;
+	// par_as_string after removal of lead_as_string
+	string par_as_string_nolead;
 	// unmatched open braces in the search string/regexp
 	int open_braces;
 	// number of (.*?) subexpressions added at end of search regexp for closing
 	// environments, math mode, styles, etc...
 	int close_wildcards;
+	// Are we searching with regular expressions ?
+	bool use_regexp;
 };
 
 
+static docstring buffer_to_latex(Buffer & buffer) 
+{
+	OutputParams runparams(&buffer.params().encoding());
+	TexRow texrow;
+	odocstringstream ods;
+	otexstream os(ods, texrow);
+	runparams.nice = true;
+	runparams.flavor = OutputParams::LATEX;
+	runparams.linelen = 80; //lyxrc.plaintext_linelen;
+	// No side effect of file copying and image conversion
+	runparams.dryrun = true;
+	pit_type const endpit = buffer.paragraphs().size();
+	for (pit_type pit = 0; pit != endpit; ++pit) {
+		TeXOnePar(buffer, buffer.text(), pit, os, runparams);
+		LYXERR(Debug::FIND, "searchString up to here: " << ods.str());
+	}
+	return ods.str();
+}
+
+
+static docstring stringifySearchBuffer(Buffer & buffer, FindAndReplaceOptions const & opt) {
+	docstring str;
+	if (!opt.ignoreformat) {
+		str = buffer_to_latex(buffer);
+	} else {
+		OutputParams runparams(&buffer.params().encoding());
+		runparams.nice = true;
+		runparams.flavor = OutputParams::LATEX;
+		runparams.linelen = 100000; //lyxrc.plaintext_linelen;
+		runparams.dryrun = true;
+		for (pos_type pit = pos_type(0); pit < (pos_type)buffer.paragraphs().size(); ++pit) {
+			Paragraph const & par = buffer.paragraphs().at(pit);
+			LYXERR(Debug::FIND, "Adding to search string: '"
+			       << par.stringify(pos_type(0), par.size(),
+						AS_STR_INSETS, runparams)
+			       << "'");
+			str += par.stringify(pos_type(0), par.size(),
+					     AS_STR_INSETS, runparams);
+		}
+	}
+	return str;
+}
+
+
+/// Return separation pos between the leading material and the rest
+static size_t identifyLeading(string const & s)  {
+	string t = s;
+	// @TODO Support \item[text]
+	while (regex_replace(t, t, "^\\\\(emph|textbf|subsubsection|subsection|section|subparagraph|paragraph|part)\\*?\\{", "")
+	       || regex_replace(t, t, "^\\$", "")
+	       || regex_replace(t, t, "^\\\\\\[ ", "")
+	       || regex_replace(t, t, "^\\\\item ", "")
+	       || regex_replace(t, t, "^\\\\begin\\{[a-zA-Z_]*\\*?\\} ", ""))
+		LYXERR(Debug::FIND, "  after removing leading $, \\[ , \\emph{, \\textbf{, etc.: '" << t << "'");
+	return s.find(t);
+}
+
+
+// Remove trailing closure of math, macros and environments, so to catch parts of them.
+static int identifyClosing(string & t) {
+	int open_braces = 0;
+	do {
+		LYXERR(Debug::FIND, "identifyClosing(): t now is '" << t << "'");
+		if (regex_replace(t, t, "(.*[^\\\\])\\$\\'", "$1"))
+			continue;
+		if (regex_replace(t, t, "(.*[^\\\\]) \\\\\\]\\'", "$1"))
+			continue;
+		if (regex_replace(t, t, "(.*[^\\\\]) \\\\end\\{[a-zA-Z_]*\\*?\\}\\'", "$1"))
+			continue;
+		if (regex_replace(t, t, "(.*[^\\\\])\\}\\'", "$1")) {
+			++open_braces;
+			continue;
+		}
+		break;
+	} while (true);
+	return open_braces;
+}
+
+
 MatchStringAdv::MatchStringAdv(lyx::Buffer & buf, FindAndReplaceOptions const & opt)
 	: p_buf(&buf), p_first_buf(&buf), opt(opt)
 {
-	par_as_string = normalize(opt.search);
+	Buffer & find_buf = *theBufferList().getBuffer(FileName(to_utf8(opt.find_buf_name)), true);
+	docstring const & ds = stringifySearchBuffer(find_buf, opt);
+	use_regexp = lyx::to_utf8(ds).find("\\regexp{") != std::string::npos;
+	// When using regexp, braces are hacked already by escape_for_regex()
+	par_as_string = normalize(ds, !use_regexp);
 	open_braces = 0;
 	close_wildcards = 0;
 
-	if (! opt.regexp) {
-		// Remove trailing closure of math, macros and environments, so to catch parts of them.
-		do {
-			LYXERR(Debug::FIND, "par_as_string now is '" << par_as_string << "'");
-			if (regex_replace(par_as_string, par_as_string, "(.*)[[:blank:]]\\'", "$1"))
-					continue;
-			if (regex_replace(par_as_string, par_as_string, "(.*[^\\\\]) ?\\$\\'", "$1"))
-					continue;
-			// @todo need to account for open square braces as well ?
-			if (regex_replace(par_as_string, par_as_string, "(.*[^\\\\]) ?\\\\\\]\\'", "$1"))
-					continue;
-			if (regex_replace(par_as_string, par_as_string, "(.*[^\\\\]) ?\\\\end\\{[a-zA-Z_]*\\}\\'", "$1"))
-					continue;
-			if (regex_replace(par_as_string, par_as_string, "(.*[^\\\\]) ?\\}\\'", "$1")) {
-				++open_braces;
-				continue;
-			}
-			break;
-		} while (true);
+	size_t lead_size = 0;
+	if (!opt.ignoreformat) {
+		lead_size = identifyLeading(par_as_string);
+		lead_as_string = par_as_string.substr(0, lead_size);
+		par_as_string_nolead = par_as_string.substr(lead_size, par_as_string.size() - lead_size);
+	}
+
+	if (!use_regexp) {
+		open_braces = identifyClosing(par_as_string);
+		identifyClosing(par_as_string_nolead);
 		LYXERR(Debug::FIND, "Open braces: " << open_braces);
 		LYXERR(Debug::FIND, "Built MatchStringAdv object: par_as_string = '" << par_as_string << "'");
 	} else {
-		par_as_string = escape_for_regex(par_as_string);
+		string lead_as_regexp;
+		if (lead_size > 0) {
+			// @todo No need to search for \regexp{} insets in leading material
+			lead_as_regexp = escape_for_regex(par_as_string.substr(0, lead_size), !opt.ignoreformat);
+			par_as_string = par_as_string_nolead;
+			LYXERR(Debug::FIND, "lead_as_regexp is '" << lead_as_regexp << "'");
+			LYXERR(Debug::FIND, "par_as_string now is '" << par_as_string << "'");
+		}
+		par_as_string = escape_for_regex(par_as_string, !opt.ignoreformat);
 		// Insert (.*?) before trailing closure of math, macros and environments, so to catch parts of them.
 		LYXERR(Debug::FIND, "par_as_string now is '" << par_as_string << "'");
 		if (
 			// Insert .* before trailing '\$' ('$' has been escaped by escape_for_regex)
 			regex_replace(par_as_string, par_as_string, "(.*[^\\\\])(\\\\\\$)\\'", "$1(.*?)$2")
-				// Insert .* before trailing '\\\]' ('\]' has been escaped by escape_for_regex)
-				|| regex_replace(par_as_string, par_as_string, "(.*[^\\\\])(\\\\\\\\\\\\\\])\\'", "$1(.*?)$2")
-				// Insert .* before trailing '\\end\{...}' ('\end{...}' has been escaped by escape_for_regex)
-				|| regex_replace(par_as_string, par_as_string, 
-					"(.*[^\\\\])(\\\\\\\\end\\\\\\{[a-zA-Z_]*\\\\\\})\\'", "$1(.*?)$2")
-				// Insert .* before trailing '\}' ('}' has been escaped by escape_for_regex)
-				|| regex_replace(par_as_string, par_as_string, "(.*[^\\\\])(\\\\\\})\\'", "$1(.*?)$2")
-		) {
+			// Insert .* before trailing '\\\]' ('\]' has been escaped by escape_for_regex)
+			|| regex_replace(par_as_string, par_as_string, "(.*[^\\\\])( \\\\\\\\\\\\\\])\\'", "$1(.*?)$2")
+			// Insert .* before trailing '\\end\{...}' ('\end{...}' has been escaped by escape_for_regex)
+			|| regex_replace(par_as_string, par_as_string,
+					 "(.*[^\\\\])( \\\\\\\\end\\\\\\{[a-zA-Z_]*)(\\\\\\*)?(\\\\\\})\\'", "$1(.*?)$2$3$4")
+			// Insert .* before trailing '\}' ('}' has been escaped by escape_for_regex)
+			|| regex_replace(par_as_string, par_as_string, "(.*[^\\\\])(\\\\\\})\\'", "$1(.*?)$2")
+			) {
 			++close_wildcards;
 		}
 		LYXERR(Debug::FIND, "par_as_string now is '" << par_as_string << "'");
@@ -724,9 +874,14 @@ MatchStringAdv::MatchStringAdv(lyx::Buffer & buf, FindAndReplaceOptions const &
 		LYXERR(Debug::FIND, "Close .*?  : " << close_wildcards);
 		LYXERR(Debug::FIND, "Replaced text (to be used as regex): " << par_as_string);
 		// If entered regexp must match at begin of searched string buffer
-		regexp = lyx::regex(string("\\`") + par_as_string);
+		string regexp_str = string("\\`") + lead_as_regexp + par_as_string;
+		LYXERR(Debug::FIND, "Setting regexp to : '" << regexp_str << "'");
+		regexp = lyx::regex(regexp_str);
+
 		// If entered regexp may match wherever in searched string buffer
-		regexp2 = lyx::regex(string("\\`.*") + par_as_string);
+		string regexp2_str = string("\\`.*") + lead_as_regexp + ".*" + par_as_string;
+		LYXERR(Debug::FIND, "Setting regexp2 to: '" << regexp2_str << "'");
+		regexp2 = lyx::regex(regexp2_str);
 	}
 }
 
@@ -735,18 +890,22 @@ int MatchStringAdv::findAux(DocIterator const & cur, int len, bool at_begin) con
 {
 	docstring docstr = stringifyFromForSearch(opt, cur, len);
 	LYXERR(Debug::FIND, "Matching against     '" << lyx::to_utf8(docstr) << "'");
-	string str = normalize(docstr);
+	string str = normalize(docstr, true);
 	LYXERR(Debug::FIND, "After normalization: '" << str << "'");
-	if (! opt.regexp) {
+	if (! use_regexp) {
+		LYXERR(Debug::FIND, "Searching in normal mode: par_as_string='" << par_as_string << "', str='" << str << "'");
+		LYXERR(Debug::FIND, "Searching in normal mode: lead_as_string='" << lead_as_string << "', par_as_string_nolead='" << par_as_string_nolead << "'");
 		if (at_begin) {
+			LYXERR(Debug::FIND, "size=" << par_as_string.size() << ", substr='" << str.substr(0, par_as_string.size()) << "'");
 			if (str.substr(0, par_as_string.size()) == par_as_string)
 				return par_as_string.size();
 		} else {
-			size_t pos = str.find(par_as_string);
+			size_t pos = str.find(par_as_string_nolead);
 			if (pos != string::npos)
 				return par_as_string.size();
 		}
 	} else {
+		LYXERR(Debug::FIND, "Searching in regexp mode: at_begin=" << at_begin);
 		// Try all possible regexp matches, 
 		//until one that verifies the braces match test is found
 		regex const *p_regexp = at_begin ? &regexp : &regexp2;
@@ -756,11 +915,12 @@ int MatchStringAdv::findAux(DocIterator const & cur, int len, bool at_begin) con
 			match_results<string::const_iterator> const & m = *re_it;
 			// Check braces on the segment that matched the entire regexp expression,
 			// plus the last subexpression, if a (.*?) was inserted in the constructor.
-			if (! braces_match(m[0].first, m[0].second, open_braces))
+			if (!braces_match(m[0].first, m[0].second, open_braces))
 				return 0;
-			// Check braces on segments that matched all (.*?) subexpressions.
-			for (size_t i = 1; i < m.size(); ++i)
-				if (! braces_match(m[i].first, m[i].second))
+			// Check braces on segments that matched all (.*?) subexpressions,
+			// except the last "padding" one inserted by lyx.
+			for (size_t i = 1; i < m.size() - 1; ++i)
+				if (!braces_match(m[i].first, m[i].second))
 					return false;
 			// Exclude from the returned match length any length 
 			// due to close wildcards added at end of regexp
@@ -777,13 +937,19 @@ int MatchStringAdv::findAux(DocIterator const & cur, int len, bool at_begin) con
 int MatchStringAdv::operator()(DocIterator const & cur, int len, bool at_begin) const
 {
 	int res = findAux(cur, len, at_begin);
+	LYXERR(Debug::FIND,
+	       "res=" << res << ", at_begin=" << at_begin
+	       << ", matchword=" << opt.matchword
+	       << ", inTexted=" << cur.inTexted());
 	if (res == 0 || !at_begin || !opt.matchword || !cur.inTexted())
 		return res;
 	Paragraph const & par = cur.paragraph();
-	bool ws_left = cur.pos() > 0 ?
-		par.isWordSeparator(cur.pos() - 1) : true;
-	bool ws_right = cur.pos() + res < par.size() ?
-		par.isWordSeparator(cur.pos() + res) : true;
+	bool ws_left = (cur.pos() > 0)
+		? par.isWordSeparator(cur.pos() - 1)
+		: true;
+	bool ws_right = (cur.pos() + res < par.size())
+		? par.isWordSeparator(cur.pos() + res)
+		: true;
 	LYXERR(Debug::FIND,
 	       "cur.pos()=" << cur.pos() << ", res=" << res
 	       << ", separ: " << ws_left << ", " << ws_right
@@ -794,7 +960,7 @@ int MatchStringAdv::operator()(DocIterator const & cur, int len, bool at_begin)
 }
 
 
-string MatchStringAdv::normalize(docstring const & s) const
+string MatchStringAdv::normalize(docstring const & s, bool hack_braces) const
 {
 	string t;
 	if (! opt.casesensitive)
@@ -813,8 +979,21 @@ string MatchStringAdv::normalize(docstring const & s) const
 		t.replace(pos, 1, " ");
 	// Remove stale empty \emph{}, \textbf{} and similar blocks from latexify
 	LYXERR(Debug::FIND, "Removing stale empty \\emph{}, \\textbf{}, \\*section{} macros from: " << t);
-	while (regex_replace(t, t, "\\\\(emph|textbf|subsubsection|subsection|section|subparagraph|paragraph)(\\{\\})+", ""))
+	while (regex_replace(t, t, "\\\\(emph|textbf|subsubsection|subsection|section|subparagraph|paragraph|part)(\\{\\})+", ""))
 		LYXERR(Debug::FIND, "  further removing stale empty \\emph{}, \\textbf{} macros from: " << t);
+
+	// FIXME - check what preceeds the brace
+	if (hack_braces) {
+		if (opt.ignoreformat)
+			while (regex_replace(t, t, "\\{", "_x_<")
+			       || regex_replace(t, t, "\\}", "_x_>"))
+				LYXERR(Debug::FIND, "After {} replacement: '" << t << "'");
+		else
+			while (regex_replace(t, t, "\\\\\\{", "_x_<")
+			       || regex_replace(t, t, "\\\\\\}", "_x_>"))
+				LYXERR(Debug::FIND, "After {} replacement: '" << t << "'");
+	}
+
 	return t;
 }
 
@@ -823,31 +1002,34 @@ docstring stringifyFromCursor(DocIterator const & cur, int len)
 {
 	LYXERR(Debug::FIND, "Stringifying with len=" << len << " from cursor at pos: " << cur);
 	if (cur.inTexted()) {
-			Paragraph const & par = cur.paragraph();
-			// TODO what about searching beyond/across paragraph breaks ?
-			// TODO Try adding a AS_STR_INSERTS as last arg
-			pos_type end = ( len == -1 || cur.pos() + len > int(par.size()) ) ?
-				int(par.size()) : cur.pos() + len;
-			OutputParams runparams(&cur.buffer()->params().encoding());
-			odocstringstream os;
-			runparams.nice = true;
-			runparams.flavor = OutputParams::LATEX;
-			runparams.linelen = 100000; //lyxrc.plaintext_linelen;
-			// No side effect of file copying and image conversion
-			runparams.dryrun = true;
-			LYXERR(Debug::FIND, "Stringifying with cur: " 
-				<< cur << ", from pos: " << cur.pos() << ", end: " << end);
-			return par.stringify(cur.pos(), end, AS_STR_INSETS, runparams);
+		Paragraph const & par = cur.paragraph();
+		// TODO what about searching beyond/across paragraph breaks ?
+		// TODO Try adding a AS_STR_INSERTS as last arg
+		pos_type end = ( len == -1 || cur.pos() + len > int(par.size()) ) ?
+			int(par.size()) : cur.pos() + len;
+		OutputParams runparams(&cur.buffer()->params().encoding());
+		odocstringstream os;
+		runparams.nice = true;
+		runparams.flavor = OutputParams::LATEX;
+		runparams.linelen = 100000; //lyxrc.plaintext_linelen;
+		// No side effect of file copying and image conversion
+		runparams.dryrun = true;
+		LYXERR(Debug::FIND, "Stringifying with cur: "
+		       << cur << ", from pos: " << cur.pos() << ", end: " << end);
+		return par.stringify(cur.pos(), end, AS_STR_INSETS, runparams);
 	} else if (cur.inMathed()) {
-			odocstringstream os;
-			CursorSlice cs = cur.top();
-			MathData md = cs.cell();
-			MathData::const_iterator it_end = 
-				( ( len == -1 || cs.pos() + len > int(md.size()) )
-					? md.end() : md.begin() + cs.pos() + len );
-			for (MathData::const_iterator it = md.begin() + cs.pos(); it != it_end; ++it)
-					os << *it;
-			return os.str();
+		docstring s;
+		CursorSlice cs = cur.top();
+		MathData md = cs.cell();
+		MathData::const_iterator it_end =
+			(( len == -1 || cs.pos() + len > int(md.size()))
+			 ? md.end()
+			 : md.begin() + cs.pos() + len );
+		for (MathData::const_iterator it = md.begin() + cs.pos();
+		     it != it_end; ++it)
+			s = s + asString(*it);
+		LYXERR(Debug::FIND, "Stringified math: '" << s << "'");
+		return s;
 	}
 	LYXERR(Debug::FIND, "Don't know how to stringify from here: " << cur);
 	return docstring();
@@ -862,12 +1044,13 @@ docstring latexifyFromCursor(DocIterator const & cur, int len)
 {
 	LYXERR(Debug::FIND, "Latexifying with len=" << len << " from cursor at pos: " << cur);
 	LYXERR(Debug::FIND, "  with cur.lastpost=" << cur.lastpos() << ", cur.lastrow="
-		<< cur.lastrow() << ", cur.lastcol=" << cur.lastcol());
+	       << cur.lastrow() << ", cur.lastcol=" << cur.lastcol());
 	Buffer const & buf = *cur.buffer();
-	LASSERT(buf.isLatex(), /* */);
+	LASSERT(buf.params().isLatex(), /* */);
 
 	TexRow texrow;
 	odocstringstream ods;
+	otexstream os(ods, texrow);
 	OutputParams runparams(&buf.params().encoding());
 	runparams.nice = false;
 	runparams.flavor = OutputParams::LATEX;
@@ -876,32 +1059,33 @@ docstring latexifyFromCursor(DocIterator const & cur, int len)
 	runparams.dryrun = true;
 
 	if (cur.inTexted()) {
-			// @TODO what about searching beyond/across paragraph breaks ?
-			ParagraphList::const_iterator pit = cur.innerText()->paragraphs().begin();
-			for (int i = 0; i < cur.pit(); ++i)
-					++pit;
-		pos_type const endpos = (len == -1 || cur.pos() + len > int(pit->size()))
-			? pit->size() : cur.pos() + len;
-		TeXOnePar(buf, *cur.innerText(), pit, ods, texrow, runparams, string(),
-			cur.pos(), endpos);
+		// @TODO what about searching beyond/across paragraph breaks ?
+		pos_type endpos = cur.paragraph().size();
+		if (len != -1 && endpos > cur.pos() + len)
+			endpos = cur.pos() + len;
+		TeXOnePar(buf, *cur.innerText(), cur.pit(), os, runparams,
+			  string(), cur.pos(), endpos);
 		LYXERR(Debug::FIND, "Latexified text: '" << lyx::to_utf8(ods.str()) << "'");
 	} else if (cur.inMathed()) {
 		// Retrieve the math environment type, and add '$' or '$[' or others (\begin{equation}) accordingly
 		for (int s = cur.depth() - 1; s >= 0; --s) {
-				CursorSlice const & cs = cur[s];
-				if (cs.asInsetMath() && cs.asInsetMath() && cs.asInsetMath()->asHullInset()) {
-						WriteStream ws(ods);
-						cs.asInsetMath()->asHullInset()->header_write(ws);
-						break;
-				}
+			CursorSlice const & cs = cur[s];
+			if (cs.asInsetMath() && cs.asInsetMath() && cs.asInsetMath()->asHullInset()) {
+				WriteStream ws(ods);
+				cs.asInsetMath()->asHullInset()->header_write(ws);
+				break;
+			}
 		}
 
 		CursorSlice const & cs = cur.top();
 		MathData md = cs.cell();
-		MathData::const_iterator it_end = ( ( len == -1 || cs.pos() + len > int(md.size()) )
-			? md.end() : md.begin() + cs.pos() + len );
-		for (MathData::const_iterator it = md.begin() + cs.pos(); it != it_end; ++it)
-				ods << *it;
+		MathData::const_iterator it_end =
+			((len == -1 || cs.pos() + len > int(md.size()))
+			 ? md.end()
+			 : md.begin() + cs.pos() + len);
+		for (MathData::const_iterator it = md.begin() + cs.pos();
+		     it != it_end; ++it)
+			ods << asString(*it);
 
 		// Retrieve the math environment type, and add '$' or '$]'
 		// or others (\end{equation}) accordingly
@@ -969,17 +1153,36 @@ int findForwardAdv(DocIterator & cur, MatchStringAdv & match)
 {
 	if (!cur)
 		return 0;
-	while (cur && !match(cur, -1, false)) {
-		if (cur.pit() < cur.lastpit())
+	while (!theApp()->longOperationCancelled() && cur) {
+		LYXERR(Debug::FIND, "findForwardAdv() cur: " << cur);
+		int match_len = match(cur, -1, false);
+		LYXERR(Debug::FIND, "match_len: " << match_len);
+		if (match_len) {
+			for (; !theApp()->longOperationCancelled() && cur; cur.forwardPos()) {
+				LYXERR(Debug::FIND, "Advancing cur: " << cur);
+				int match_len = match(cur);
+				LYXERR(Debug::FIND, "match_len: " << match_len);
+				if (match_len) {
+					// Sometimes in finalize we understand it wasn't a match
+					// and we need to continue the outest loop
+					int len = findAdvFinalize(cur, match);
+					if (len > 0)
+						return len;
+				}
+			}
+			if (!cur)
+				return 0;
+		}
+		if (cur.pit() < cur.lastpit()) {
+			LYXERR(Debug::FIND, "Advancing par: cur=" << cur);
 			cur.forwardPar();
-		else {
+		} else {
+			// This should exit nested insets, if any, or otherwise undefine the currsor.
+			cur.pos() = cur.lastpos();
+			LYXERR(Debug::FIND, "Advancing pos: cur=" << cur);
 			cur.forwardPos();
 		}
 	}
-	for (; cur; cur.forwardPos()) {
-		if (match(cur))
-			return findAdvFinalize(cur, match);
-	}
 	return 0;
 }
 
@@ -1052,7 +1255,7 @@ int findBackwardsAdv(DocIterator & cur, MatchStringAdv & match) {
 		else
 			cur.backwardPos();
 		pit_changed = true;
-	} while (true);
+	} while (!theApp()->longOperationCancelled());
 	return 0;
 }
 
@@ -1061,8 +1264,9 @@ int findBackwardsAdv(DocIterator & cur, MatchStringAdv & match) {
 
 
 docstring stringifyFromForSearch(FindAndReplaceOptions const & opt,
-	DocIterator const & cur, int len)
+				 DocIterator const & cur, int len)
 {
+	LASSERT(cur.pos() >= 0 && cur.pos() <= cur.lastpos(), /* */);
 	if (!opt.ignoreformat)
 		return latexifyFromCursor(cur, len);
 	else
@@ -1070,28 +1274,19 @@ docstring stringifyFromForSearch(FindAndReplaceOptions const & opt,
 }
 
 
-FindAndReplaceOptions::FindAndReplaceOptions(docstring const & search, bool casesensitive,
+FindAndReplaceOptions::FindAndReplaceOptions(
+	docstring const & find_buf_name, bool casesensitive,
 	bool matchword, bool forward, bool expandmacros, bool ignoreformat,
-	bool regexp, docstring const & replace, bool keep_case,
+	docstring const & repl_buf_name, bool keep_case,
 	SearchScope scope)
-	: search(search), casesensitive(casesensitive), matchword(matchword),
-	forward(forward), expandmacros(expandmacros), ignoreformat(ignoreformat),
-	regexp(regexp), replace(replace), keep_case(keep_case), scope(scope)
+	: find_buf_name(find_buf_name), casesensitive(casesensitive), matchword(matchword),
+	  forward(forward), expandmacros(expandmacros), ignoreformat(ignoreformat),
+	  repl_buf_name(repl_buf_name), keep_case(keep_case), scope(scope)
 {
 }
 
 
 namespace {
-/** Checks if the supplied character is lower-case */
-static bool isLowerCase(char_type ch) {
-	return lowercase(ch) == ch;
-}
-
-
-/** Checks if the supplied character is upper-case */
-static bool isUpperCase(char_type ch) {
-	return uppercase(ch) == ch;
-}
 
 
 /** Check if 'len' letters following cursor are all non-lowercase */
@@ -1139,8 +1334,9 @@ static void changeFirstCase(Buffer & buffer, TextCase first_case, TextCase other
 static void findAdvReplace(BufferView * bv, FindAndReplaceOptions const & opt, MatchStringAdv & matchAdv)
 {
 	Cursor & cur = bv->cursor();
-	if (opt.replace == docstring(from_utf8(LYX_FR_NULL_STRING)))
+	if (opt.repl_buf_name == docstring())
 		return;
+
 	DocIterator sel_beg = cur.selectionBegin();
 	DocIterator sel_end = cur.selectionEnd();
 	if (&sel_beg.inset() != &sel_end.inset()
@@ -1156,15 +1352,14 @@ static void findAdvReplace(BufferView * bv, FindAndReplaceOptions const & opt, M
 	if (!matchAdv(sel_beg, sel_len))
 		return;
 
-	string lyx = to_utf8(opt.replace);
-	// FIXME: Seems so stupid to me to rebuild a buffer here,
-	// when we already have one (replace_work_area_.buffer())
+	// Build a copy of the replace buffer, adapted to the KeepCase option
+	Buffer & repl_buffer_orig = *theBufferList().getBuffer(FileName(to_utf8(opt.repl_buf_name)), true);
+	ostringstream oss;
+	repl_buffer_orig.write(oss);
+	string lyx = oss.str();
 	Buffer repl_buffer("", false);
 	repl_buffer.setUnnamed(true);
 	LASSERT(repl_buffer.readString(lyx), /**/);
-	repl_buffer.changeLanguage(
-		repl_buffer.language(),
-		cur.getFont().language());
 	if (opt.keep_case && sel_len >= 2) {
 		if (cur.inTexted()) {
 			if (firstUppercase(cur))
@@ -1174,21 +1369,27 @@ static void findAdvReplace(BufferView * bv, FindAndReplaceOptions const & opt, M
 		}
 	}
 	cap::cutSelection(cur, false, false);
-	if (!cur.inMathed()) {
+	if (cur.inTexted()) {
+		repl_buffer.changeLanguage(
+			repl_buffer.language(),
+			cur.getFont().language());
 		LYXERR(Debug::FIND, "Replacing by pasteParagraphList()ing repl_buffer");
+		LYXERR(Debug::FIND, "Before pasteParagraphList() cur=" << cur << endl);
 		cap::pasteParagraphList(cur, repl_buffer.paragraphs(),
 					repl_buffer.params().documentClassPtr(),
 					bv->buffer().errorList("Paste"));
-	} else {
+		LYXERR(Debug::FIND, "After pasteParagraphList() cur=" << cur << endl);
+		sel_len = repl_buffer.paragraphs().begin()->size();
+	} else if (cur.inMathed()) {
+		TexRow texrow;
 		odocstringstream ods;
+		otexstream os(ods, texrow);
 		OutputParams runparams(&repl_buffer.params().encoding());
 		runparams.nice = false;
 		runparams.flavor = OutputParams::LATEX;
 		runparams.linelen = 8000; //lyxrc.plaintext_linelen;
 		runparams.dryrun = true;
-		TexRow texrow;
-		TeXOnePar(repl_buffer, repl_buffer.text(), 
-			  repl_buffer.paragraphs().begin(), ods, texrow, runparams);
+		TeXOnePar(repl_buffer, repl_buffer.text(), 0, os, runparams);
 		//repl_buffer.getSourceCode(ods, 0, repl_buffer.paragraphs().size(), false);
 		docstring repl_latex = ods.str();
 		LYXERR(Debug::FIND, "Latexified replace_buffer: '" << repl_latex << "'");
@@ -1196,12 +1397,21 @@ static void findAdvReplace(BufferView * bv, FindAndReplaceOptions const & opt, M
 		regex_replace(to_utf8(repl_latex), s, "\\$(.*)\\$", "$1");
 		regex_replace(s, s, "\\\\\\[(.*)\\\\\\]", "$1");
 		repl_latex = from_utf8(s);
-		LYXERR(Debug::FIND, "Replacing by niceInsert()ing latex: '" << repl_latex << "'");
-		cur.niceInsert(repl_latex);
+		LYXERR(Debug::FIND, "Replacing by insert()ing latex: '" << repl_latex << "' cur=" << cur << " with depth=" << cur.depth());
+		MathData ar(cur.buffer());
+		asArray(repl_latex, ar, Parse::NORMAL);
+		cur.insert(ar);
+		sel_len = ar.size();
+		LYXERR(Debug::FIND, "After insert() cur=" << cur << " with depth: " << cur.depth() << " and len: " << sel_len);
 	}
-	bv->buffer().markDirty();
-	cur.pos() -= repl_buffer.paragraphs().begin()->size();
-	bv->putSelectionAt(DocIterator(cur), repl_buffer.paragraphs().begin()->size(), !opt.forward);
+	if (cur.pos() >= sel_len)
+		cur.pos() -= sel_len;
+	else
+		cur.pos() = 0;
+	LYXERR(Debug::FIND, "After pos adj cur=" << cur << " with depth: " << cur.depth() << " and len: " << sel_len);
+	bv->putSelectionAt(DocIterator(cur), sel_len, !opt.forward);
+	bv->processUpdateFlags(Update::Force);
+	bv->buffer().updatePreviews();
 }
 
 
@@ -1209,21 +1419,16 @@ static void findAdvReplace(BufferView * bv, FindAndReplaceOptions const & opt, M
 bool findAdv(BufferView * bv, FindAndReplaceOptions const & opt)
 {
 	DocIterator cur;
-	int match_len;
-
-	if (opt.search.empty()) {
-		bv->message(_("Search text is empty!"));
-		return false;
-	}
+	int match_len = 0;
 
 	try {
 		MatchStringAdv matchAdv(bv->buffer(), opt);
 		findAdvReplace(bv, opt, matchAdv);
 		cur = bv->cursor();
 		if (opt.forward)
-				match_len = findForwardAdv(cur, matchAdv);
+			match_len = findForwardAdv(cur, matchAdv);
 		else
-				match_len = findBackwardsAdv(cur, matchAdv);
+			match_len = findBackwardsAdv(cur, matchAdv);
 	} catch (...) {
 		// This may only be raised by lyx::regex()
 		bv->message(_("Invalid regular expression!"));
@@ -1246,14 +1451,13 @@ bool findAdv(BufferView * bv, FindAndReplaceOptions const & opt)
 
 ostringstream & operator<<(ostringstream & os, FindAndReplaceOptions const & opt)
 {
-	os << to_utf8(opt.search) << "\nEOSS\n"
+	os << to_utf8(opt.find_buf_name) << "\nEOSS\n"
 	   << opt.casesensitive << ' '
 	   << opt.matchword << ' '
 	   << opt.forward << ' '
 	   << opt.expandmacros << ' '
 	   << opt.ignoreformat << ' '
-	   << opt.regexp << ' '
-	   << to_utf8(opt.replace) << "\nEOSS\n"
+	   << to_utf8(opt.repl_buf_name) << "\nEOSS\n"
 	   << opt.keep_case << ' '
 	   << int(opt.scope);
 
@@ -1262,6 +1466,7 @@ ostringstream & operator<<(ostringstream & os, FindAndReplaceOptions const & opt
 	return os;
 }
 
+
 istringstream & operator>>(istringstream & is, FindAndReplaceOptions & opt)
 {
 	LYXERR(Debug::FIND, "parsing");
@@ -1270,34 +1475,34 @@ istringstream & operator>>(istringstream & is, FindAndReplaceOptions & opt)
 	getline(is, line);
 	while (line != "EOSS") {
 		if (! s.empty())
-				s = s + "\n";
+			s = s + "\n";
 		s = s + line;
 		if (is.eof())	// Tolerate malformed request
-				break;
+			break;
 		getline(is, line);
 	}
-	LYXERR(Debug::FIND, "searching for: '" << s << "'");
-	opt.search = from_utf8(s);
-	is >> opt.casesensitive >> opt.matchword >> opt.forward >> opt.expandmacros >> opt.ignoreformat >> opt.regexp;
+	LYXERR(Debug::FIND, "file_buf_name: '" << s << "'");
+	opt.find_buf_name = from_utf8(s);
+	is >> opt.casesensitive >> opt.matchword >> opt.forward >> opt.expandmacros >> opt.ignoreformat;
 	is.get();	// Waste space before replace string
 	s = "";
 	getline(is, line);
 	while (line != "EOSS") {
 		if (! s.empty())
-				s = s + "\n";
+			s = s + "\n";
 		s = s + line;
 		if (is.eof())	// Tolerate malformed request
-				break;
+			break;
 		getline(is, line);
 	}
+	LYXERR(Debug::FIND, "repl_buf_name: '" << s << "'");
+	opt.repl_buf_name = from_utf8(s);
 	is >> opt.keep_case;
 	int i;
 	is >> i;
 	opt.scope = FindAndReplaceOptions::SearchScope(i);
 	LYXERR(Debug::FIND, "parsed: " << opt.casesensitive << ' ' << opt.matchword << ' ' << opt.forward << ' '
-		   << opt.expandmacros << ' ' << opt.ignoreformat << ' ' << opt.regexp << ' ' << opt.keep_case);
-	LYXERR(Debug::FIND, "replacing with: '" << s << "'");
-	opt.replace = from_utf8(s);
+	       << opt.expandmacros << ' ' << opt.ignoreformat << ' ' << opt.keep_case);
 	return is;
 }