]> git.lyx.org Git - lyx.git/blobdiff - src/lyxfind.cpp
Fix some issues with textmode. We'll let SetMode() handle as much of
[lyx.git] / src / lyxfind.cpp
index 4186fa8f1eac0be183d29fb20ce72c44ee7072d5..e95f06e27fa9d4fe963124ce12475cf36eb10bb6 100644 (file)
@@ -1,12 +1,13 @@
 /**
  * \file lyxfind.cpp
  * This file is part of LyX, the document processor.
- * Licence details can be found in the file COPYING.
+ * License details can be found in the file COPYING.
  *
- * \author Lars Gullik Bjønnes
+ * \author Lars Gullik Bjønnes
  * \author John Levon
- * \author Jürgen Vigna
+ * \author Jürgen Vigna
  * \author Alfredo Braunstein
+ * \author Tommaso Cucinotta
  *
  * Full author contact details are available in file CREDITS.
  */
 #include "lyxfind.h"
 
 #include "Buffer.h"
-#include "BufferParams.h"
-#include "Cursor.h"
-#include "CutAndPaste.h"
+#include "BufferList.h"
 #include "buffer_funcs.h"
+#include "BufferParams.h"
 #include "BufferView.h"
 #include "Changes.h"
-#include "debug.h"
+#include "Cursor.h"
+#include "CutAndPaste.h"
 #include "FuncRequest.h"
-#include "gettext.h"
-#include "Text.h"
+#include "OutputParams.h"
+#include "output_latex.h"
 #include "Paragraph.h"
 #include "ParIterator.h"
+#include "TexRow.h"
+#include "Text.h"
+#include "FuncRequest.h"
+#include "LyXFunc.h"
+
+#include "mathed/InsetMath.h"
+#include "mathed/InsetMathGrid.h"
+#include "mathed/InsetMathHull.h"
+#include "mathed/MathStream.h"
 
 #include "frontends/alert.h"
 
 #include "support/convert.h"
+#include "support/debug.h"
 #include "support/docstream.h"
+#include "support/gettext.h"
 #include "support/lstrings.h"
+#include "support/lassert.h"
 
-namespace lyx {
+#include "frontends/Application.h"
+#include "frontends/LyXView.h"
 
-using support::compare_no_case;
-using support::uppercase;
-using support::split;
+#include <boost/regex.hpp>
+#include <boost/next_prior.hpp>
 
-using std::advance;
+using namespace std;
+using namespace lyx::support;
 
+namespace lyx {
 
 namespace {
 
@@ -52,11 +67,11 @@ bool parse_bool(docstring & howto)
                return false;
        docstring var;
        howto = split(howto, var, ' ');
-       return (var == "1");
+       return var == "1";
 }
 
 
-class MatchString : public std::binary_function<Paragraph, pos_type, bool>
+class MatchString : public binary_function<Paragraph, pos_type, bool>
 {
 public:
        MatchString(docstring const & str, bool cs, bool mw)
@@ -104,11 +119,19 @@ bool findBackwards(DocIterator & cur, MatchString const & match,
 }
 
 
-bool findChange(DocIterator & cur)
+bool findChange(DocIterator & cur, bool next)
 {
-       for (; cur; cur.forwardPos())
-               if (cur.inTexted() && !cur.paragraph().isUnchanged(cur.pos()))
+       if (!next)
+               cur.backwardPos();
+       for (; cur; next ? cur.forwardPos() : cur.backwardPos())
+               if (cur.inTexted() && cur.paragraph().isChanged(cur.pos())) {
+                       if (!next)
+                               // if we search backwards, take a step forward
+                               // to correctly set the anchor
+                               cur.forwardPos();
                        return true;
+               }
+
        return false;
 }
 
@@ -152,19 +175,19 @@ int replaceAll(BufferView * bv,
        if (!searchAllowed(bv, searchstr) || buf.isReadonly())
                return 0;
 
-       bv->cursor().recordUndoFullDocument();
-
        MatchString const match(searchstr, cs, mw);
        int num = 0;
 
        int const rsize = replacestr.size();
        int const ssize = searchstr.size();
 
-       DocIterator cur = doc_iterator_begin(buf.inset());
+       Cursor cur(*bv);
+       cur.setCursor(doc_iterator_begin(&buf));
        while (findForward(cur, match, false)) {
-               pos_type pos = cur.pos();
-               Font const font
-                       = cur.paragraph().getFontSettings(buf.params(), pos);
+               // 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);
                cur.paragraph().insert(pos, replacestr, font,
@@ -175,17 +198,25 @@ int replaceAll(BufferView * bv,
                ++num;
        }
 
-       updateLabels(buf);
-       bv->putSelectionAt(doc_iterator_begin(buf.inset()), 0, false);
+       buf.updateLabels();
+       bv->putSelectionAt(doc_iterator_begin(&buf), 0, false);
        if (num)
                buf.markDirty();
        return num;
 }
 
 
-bool stringSelected(BufferView * bv, docstring const & searchstr,
+bool stringSelected(BufferView * bv, docstring & searchstr,
                    bool cs, bool mw, bool fw)
 {
+       // if nothing selected and searched string is empty, this
+       // means that we want to search current word at cursor position.
+       if (!bv->cursor().selection() && searchstr.empty()) {
+               bv->cursor().innerText()->selectWord(bv->cursor(), WHOLE_WORD);
+               searchstr = bv->cursor().selectionAsString(false);
+               return true;
+       }
+
        // if nothing selected or selection does not equal search
        // string search and select next occurance and return
        docstring const & str1 = searchstr;
@@ -199,19 +230,20 @@ bool stringSelected(BufferView * bv, docstring const & searchstr,
 }
 
 
-int replace(BufferView * bv, docstring const & searchstr,
+int replace(BufferView * bv, docstring & searchstr,
            docstring const & replacestr, bool cs, bool mw, bool fw)
 {
-       if (!searchAllowed(bv, searchstr) || bv->buffer().isReadonly())
+       if (!stringSelected(bv, searchstr, cs, mw, fw))
                return 0;
 
-       if (!stringSelected(bv, searchstr, cs, mw, fw))
+       if (!searchAllowed(bv, searchstr) || bv->buffer().isReadonly())
                return 0;
 
        Cursor & cur = bv->cursor();
        cap::replaceSelectionWithString(cur, replacestr, fw);
        bv->buffer().markDirty();
        find(bv, searchstr, cs, mw, fw, false);
+       bv->buffer().updateMacros();
        bv->processUpdateFlags(Update::Force | Update::FitCursor);
 
        return 1;
@@ -232,13 +264,13 @@ docstring const find2string(docstring const & search,
 }
 
 
-docstring const replace2string(docstring const & search, docstring const & replace,
-                           bool casesensitive, bool matchword,
-                           bool all, bool forward)
+docstring const replace2string(docstring const & replace,
+       docstring const & search, bool casesensitive, bool matchword,
+       bool all, bool forward)
 {
        odocstringstream ss;
-       ss << search << '\n'
-          << replace << '\n'
+       ss << replace << '\n'
+          << search << '\n'
           << int(casesensitive) << ' '
           << int(matchword) << ' '
           << int(all) << ' '
@@ -247,12 +279,12 @@ docstring const replace2string(docstring const & search, docstring const & repla
 }
 
 
-void find(BufferView * bv, FuncRequest const & ev)
+bool find(BufferView * bv, FuncRequest const & ev)
 {
        if (!bv || ev.action != LFUN_WORD_FIND)
-               return;
+               return false;
 
-       //lyxerr << "find called, cmd: " << ev << std::endl;
+       //lyxerr << "find called, cmd: " << ev << endl;
 
        // data is of the form
        // "<search>
@@ -264,12 +296,7 @@ void find(BufferView * bv, FuncRequest const & ev)
        bool matchword     = parse_bool(howto);
        bool forward       = parse_bool(howto);
 
-       bool const found = find(bv, search,
-                                 casesensitive, matchword, forward);
-
-       if (!found)
-               // emit message signal.
-               bv->message(_("String not found!"));
+       return find(bv, search, casesensitive, matchword, forward);
 }
 
 
@@ -284,8 +311,8 @@ void replace(BufferView * bv, FuncRequest const & ev, bool has_deleted)
        //  <casesensitive> <matchword> <all> <forward>"
        docstring search;
        docstring rplc;
-       docstring howto = split(ev.argument(), search, '\n');
-       howto = split(howto, rplc, '\n');
+       docstring howto = split(ev.argument(), rplc, '\n');
+       howto = split(howto, search, '\n');
 
        bool casesensitive = parse_bool(howto);
        bool matchword     = parse_bool(howto);
@@ -296,7 +323,7 @@ void replace(BufferView * bv, FuncRequest const & ev, bool has_deleted)
                int const replace_count = all
                        ? replaceAll(bv, search, rplc, casesensitive, matchword)
                        : replace(bv, search, rplc, casesensitive, matchword, forward);
-       
+
                Buffer & buf = bv->buffer();
                if (replace_count == 0) {
                        // emit message signal.
@@ -315,11 +342,9 @@ void replace(BufferView * bv, FuncRequest const & ev, bool has_deleted)
        } else {
                // if we have deleted characters, we do not replace at all, but
                // rather search for the next occurence
-               bool const found = find(bv, search,
-                                       casesensitive, matchword, forward);
-
-               if (!found)
-                       // emit message signal.
+               if (find(bv, search, casesensitive, matchword, forward))
+                       bv->showCursor();
+               else
                        bv->message(_("String not found!"));
        }
 }
@@ -327,32 +352,1082 @@ void replace(BufferView * bv, FuncRequest const & ev, bool has_deleted)
 
 bool findNextChange(BufferView * bv)
 {
+       return findChange(bv, true);
+}
+
+
+bool findPreviousChange(BufferView * bv)
+{
+       return findChange(bv, false);
+}
+
+
+bool findChange(BufferView * bv, bool next)
+{
+       if (bv->cursor().selection()) {
+               // set the cursor at the beginning or at the end of the selection
+               // before searching. Otherwise, the current change will be found.
+               if (next != (bv->cursor().top() > bv->cursor().anchor()))
+                       bv->cursor().setCursorToAnchor();
+       }
+
        DocIterator cur = bv->cursor();
 
-       if (!findChange(cur))
+       // Are we within a change ? Then first search forward (backward),
+       // clear the selection and search the other way around (see the end
+       // of this function). This will avoid changes to be selected half.
+       bool search_both_sides = false;
+       if (cur.pos() > 1) {
+               Change change_next_pos
+                       = cur.paragraph().lookupChange(cur.pos());
+               Change change_prev_pos
+                       = cur.paragraph().lookupChange(cur.pos() - 1);
+               if (change_next_pos.isSimilarTo(change_prev_pos))
+                       search_both_sides = true;
+       }
+
+       if (!findChange(cur, next))
                return false;
 
        bv->cursor().setCursor(cur);
        bv->cursor().resetAnchor();
 
+       if (!next)
+               // take a step into the change
+               cur.backwardPos();
+
        Change orig_change = cur.paragraph().lookupChange(cur.pos());
 
        CursorSlice & tip = cur.top();
-       for (; !tip.at_end(); tip.forwardPos()) {
-               Change change = tip.paragraph().lookupChange(tip.pos());
-               if (change != orig_change)
-                       break;
+       if (next) {
+               for (; !tip.at_end(); tip.forwardPos()) {
+                       Change change = tip.paragraph().lookupChange(tip.pos());
+                       if (change != orig_change)
+                               break;
+               }
+       } else {
+               for (; !tip.at_begin();) {
+                       tip.backwardPos();
+                       Change change = tip.paragraph().lookupChange(tip.pos());
+                       if (change != orig_change) {
+                               // take a step forward to correctly set the selection
+                               tip.forwardPos();
+                               break;
+                       }
+               }
        }
-       // avoid crash (assertion violation) if the imaginary end-of-par
-       // character of the last paragraph of the document is marked as changed
-       if (tip.at_end())
-               tip.backwardPos();
 
        // Now put cursor to end of selection:
        bv->cursor().setCursor(cur);
        bv->cursor().setSelection();
 
+       if (search_both_sides) {
+               bv->cursor().setSelection(false);
+               findChange(bv, !next);
+       }
+
+       return true;
+}
+
+namespace {
+
+typedef vector<pair<string, string> > Escapes;
+
+/// A map of symbols and their escaped equivalent needed within a regex.
+Escapes const & get_regexp_escapes()
+{
+       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>(".", "\\."));
+       }
+       return escape_map;
+}
+
+/// A map of lyx escaped strings and their unescaped equivalent.
+Escapes const & get_lyx_unescapes() {
+       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>("\\^", "^"));
+       }
+       return escape_map;
+}
+
+/** @todo Probably the maps need to be migrated to regexps, in order to distinguish if
+ ** the found occurrence were escaped.
+ **/
+string apply_escapes(string s, Escapes const & escape_map)
+{
+       LYXERR(Debug::FIND, "Escaping: '" << s << "'");
+       Escapes::const_iterator it;
+       for (it = escape_map.begin(); it != escape_map.end(); ++it) {
+//             LYXERR(Debug::FIND, "Escaping " << it->first << " as " << it->second);
+               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);
+                       pos += it->second.length();
+//                     LYXERR(Debug::FIND, "pos: " << pos);
+               }
+       }
+       LYXERR(Debug::FIND, "Escaped : '" << s << "'");
+       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)
+{
+       size_t pos = 0;
+       while (pos < s.size()) {
+                       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);
+                       t = apply_escapes(t, get_regexp_escapes());
+                       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 = find_matching_brace(s, new_pos + 7);
+                       LYXERR(Debug::FIND, "end_pos: " << end_pos);
+                       t = apply_escapes(s.substr(new_pos + 8, end_pos - (new_pos + 8)), get_lyx_unescapes());
+                       LYXERR(Debug::FIND, "t      : " << 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 + 1 - new_pos, t);
+                       LYXERR(Debug::FIND, "Regexp after \\regexp{} removal: " << s);
+                       pos = new_pos + t.size();
+                       LYXERR(Debug::FIND, "pos: " << pos);
+       }
+       return s;
+}
+
+/// Wrapper for boost::regex_replace with simpler interface
+bool regex_replace(string const & s, string & t, string const & searchstr,
+       string const & replacestr)
+{
+       boost::regex e(searchstr);
+       ostringstream oss;
+       ostream_iterator<char, char> it(oss);
+       boost::regex_replace(it, s.begin(), s.end(), e, replacestr);
+       // tolerate t and s be references to the same variable
+       bool rv = (s != oss.str());
+       t = oss.str();
+       return rv;
+}
+
+/** Checks if supplied string segment is well-formed from the standpoint of matching open-closed braces.
+ **
+ ** Verify that closed braces exactly match open braces. This avoids that, for example,
+ ** \frac{.*}{x} matches \frac{x+\frac{y}{x}}{z} with .* being 'x+\frac{y'.
+ **
+ ** @param unmatched
+ ** Number of open braces that must remain open at the end for the verification to succeed.
+ **/
+bool braces_match(string::const_iterator const & beg,
+       string::const_iterator const & end, int unmatched = 0)
+{
+       int open_pars = 0;
+       string::const_iterator it = beg;
+       LYXERR(Debug::FIND, "Checking " << unmatched << " unmatched braces in '" << string(beg, end) << "'");
+       for (; it != end; ++it) {
+               // Skip escaped braces in the count
+               if (*it == '\\') {
+                       ++it;
+                       if (it == end)
+                               break;
+               } else if (*it == '{') {
+                       ++open_pars;
+               } else if (*it == '}') {
+                       if (open_pars == 0) {
+                               LYXERR(Debug::FIND, "Found unmatched closed brace");
+                               return false;
+                       } else
+                               --open_pars;
+               }
+       }
+       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, "Braces match as expected");
        return true;
 }
 
+/** The class performing a match between a position in the document and the FindAdvOptions.
+ **/
+class MatchStringAdv {
+public:
+       MatchStringAdv(lyx::Buffer & buf, FindAndReplaceOptions const & opt);
+
+       /** Tests if text starting at the supplied position matches with the one provided to the MatchStringAdv
+        ** constructor as opt.search, under the opt.* options settings.
+        **
+        ** @param at_begin
+        **     If set, then match is searched only against beginning of text starting at cur.
+        **     If unset, then match is searched anywhere in text starting at cur.
+        **
+        ** @return
+        ** The length of the matching text, or zero if no match was found.
+        **/
+       int operator()(DocIterator const & cur, int len = -1, bool at_begin = true) const;
+
+public:
+       /// buffer
+       lyx::Buffer * p_buf;
+       /// first buffer on which search was started
+       lyx::Buffer * const p_first_buf;
+       /// options
+       FindAndReplaceOptions const & opt;
+
+private:
+       /** Normalize a stringified or latexified LyX paragraph.
+        **
+        ** Normalize means:
+        ** <ul>
+        **   <li>if search is not casesensitive, then lowercase the string;
+        **   <li>remove any newline at begin or end of the string;
+        **   <li>replace any newline in the middle of the string with a simple space;
+        **   <li>remove stale empty styles and environments, like \emph{} and \textbf{}.
+        ** </ul>
+        **
+        ** @todo Normalization should also expand macros, if the corresponding
+        ** search option was checked.
+        **/
+       string normalize(docstring const & s) const;
+       // normalized string to search
+       string par_as_string;
+       // regular expression to use for searching
+       boost::regex regexp;
+       // same as regexp, but prefixed with a ".*"
+       boost::regex regexp2;
+       // 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;
+};
+
+
+MatchStringAdv::MatchStringAdv(lyx::Buffer & buf, FindAndReplaceOptions const & opt)
+       : p_buf(&buf), p_first_buf(&buf), opt(opt)
+{
+       par_as_string = normalize(opt.search);
+       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, "(.*[^\\\\]) ?\\}\\'", "$1")) {
+                               ++open_braces;
+                               continue;
+                       }
+                       break;
+               } while (true);
+               LYXERR(Debug::FIND, "Open braces: " << open_braces);
+               LASSERT(braces_match(par_as_string.begin(), par_as_string.end(), open_braces), /* */);
+               LYXERR(Debug::FIND, "Built MatchStringAdv object: par_as_string = '" << par_as_string << "'");
+       } else {
+               par_as_string = escape_for_regex(par_as_string);
+               // Insert (.*?) before trailing closure of math, macros and environments, so to catch parts of them.
+               LYXERR(Debug::FIND, "par_as_string now is '" << par_as_string << "'");
+               if (
+                       // Insert .* before trailing '\$' ('$' 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")
+               ) {
+                       ++close_wildcards;
+               }
+               LYXERR(Debug::FIND, "par_as_string now is '" << par_as_string << "'");
+               LYXERR(Debug::FIND, "Open braces: " << open_braces);
+               LYXERR(Debug::FIND, "Close .*?  : " << close_wildcards);
+               LASSERT(braces_match(par_as_string.begin(), par_as_string.end(), open_braces), /* */);
+               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 = boost::regex(string("\\`") + par_as_string);
+               // If entered regexp may match wherever in searched string buffer
+               regexp2 = boost::regex(string("\\`.*") + par_as_string);
+       }
+}
+
+
+int MatchStringAdv::operator()(DocIterator const & cur, int len, bool at_begin) const
+{
+       docstring docstr = stringifyFromForSearch(opt, cur, len);
+       LYXERR(Debug::FIND, "Matching against     '" << lyx::to_utf8(docstr) << "'");
+       string str = normalize(docstr);
+       LYXERR(Debug::FIND, "After normalization: '" << str << "'");
+       if (! opt.regexp) {
+               if (at_begin) {
+                       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);
+                       if (pos != string::npos)
+                               return par_as_string.size();
+               }
+       } else {
+               // Try all possible regexp matches, 
+               //until one that verifies the braces match test is found
+               boost::regex const *p_regexp = at_begin ? &regexp : &regexp2;
+               boost::sregex_iterator re_it(str.begin(), str.end(), *p_regexp);
+               boost::sregex_iterator re_it_end;
+               for (; re_it != re_it_end; ++re_it) {
+                       boost::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))
+                               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))
+                                       return false;
+                       // Exclude from the returned match length any length 
+                       // due to close wildcards added at end of regexp
+                       if (close_wildcards == 0)
+                               return m[0].second - m[0].first;
+                       else
+                               return m[m.size() - close_wildcards].first - m[0].first;
+               }
+       }
+       return 0;
+}
+
+
+string MatchStringAdv::normalize(docstring const & s) const
+{
+       string t;
+       if (! opt.casesensitive)
+               t = lyx::to_utf8(lowercase(s));
+       else
+               t = lyx::to_utf8(s);
+       // Remove \n at begin
+       while (t.size() > 0 && t[0] == '\n')
+               t = t.substr(1);
+       // Remove \n at end
+       while (t.size() > 0 && t[t.size() - 1] == '\n')
+               t = t.substr(0, t.size() - 1);
+       size_t pos;
+       // Replace all other \n with spaces
+       while ((pos = t.find("\n")) != string::npos)
+               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)(\\{\\})+", ""))
+               LYXERR(Debug::FIND, "  further removing stale empty \\emph{}, \\textbf{} macros from: " << t);
+       return t;
+}
+
+
+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);
+       } 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();
+       }
+       LYXERR(Debug::FIND, "Don't know how to stringify from here: " << cur);
+       return docstring();
+}
+
+
+/** Computes the LaTeX export of buf starting from cur and ending len positions
+ * after cur, if len is positive, or at the paragraph or innermost inset end
+ * if len is -1.
+ */
+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());
+       Buffer const & buf = *cur.buffer();
+       LASSERT(buf.isLatex(), /* */);
+
+       TexRow texrow;
+       odocstringstream ods;
+       OutputParams runparams(&buf.params().encoding());
+       runparams.nice = false;
+       runparams.flavor = OutputParams::LATEX;
+       runparams.linelen = 8000; //lyxrc.plaintext_linelen;
+       // No side effect of file copying and image conversion
+       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;
+//             ParagraphList::const_iterator pit_end = pit;
+//             ++pit_end;
+//             lyx::latexParagraphs(buf, cur.innerText()->paragraphs(), ods, texrow, runparams, string(), pit, pit_end);
+               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);
+               LYXERR(Debug::FIND, "Latexified text: '" << lyx::to_utf8(ods.str()) << "'");
+       } else if (cur.inMathed()) {
+               // Retrieve the math environment type, and add '$' or '$[' or others (\begin{equation}) accordingly
+               for (int s = cur.depth() - 1; s >= 0; --s) {
+                               CursorSlice const & cs = cur[s];
+                               if (cs.asInsetMath() && cs.asInsetMath() && cs.asInsetMath()->asHullInset()) {
+                                               WriteStream ws(ods);
+                                               cs.asInsetMath()->asHullInset()->header_write(ws);
+                                               break;
+                               }
+               }
+
+               CursorSlice const & cs = cur.top();
+               MathData md = cs.cell();
+               MathData::const_iterator it_end = ( ( len == -1 || cs.pos() + len > int(md.size()) )
+                       ? md.end() : md.begin() + cs.pos() + len );
+               for (MathData::const_iterator it = md.begin() + cs.pos(); it != it_end; ++it)
+                               ods << *it;
+
+               // MathData md = cur.cell();
+               // MathData::const_iterator it_end = ( ( len == -1 || cur.pos() + len > int(md.size()) ) ? md.end() : md.begin() + cur.pos() + len );
+               // for (MathData::const_iterator it = md.begin() + cur.pos(); it != it_end; ++it) {
+               //      MathAtom const & ma = *it;
+               //      ma.nucleus()->latex(buf, ods, runparams);
+               // }
+
+               // Retrieve the math environment type, and add '$' or '$]'
+               // or others (\end{equation}) accordingly
+               for (int s = cur.depth() - 1; s >= 0; --s) {
+                       CursorSlice const & cs = cur[s];
+                       InsetMath * inset = cs.asInsetMath();
+                       if (inset && inset->asHullInset()) {
+                               WriteStream ws(ods);
+                               inset->asHullInset()->footer_write(ws);
+                               break;
+                       }
+               }
+               LYXERR(Debug::FIND, "Latexified math: '" << lyx::to_utf8(ods.str()) << "'");
+       } else {
+               LYXERR(Debug::FIND, "Don't know how to stringify from here: " << cur);
+       }
+       return ods.str();
+}
+
+
+/** Finalize an advanced find operation, advancing the cursor to the innermost
+ ** position that matches, plus computing the length of the matching text to
+ ** be selected
+ **/
+int findAdvFinalize(DocIterator & cur, MatchStringAdv const & match)
+{
+       // Search the foremost position that matches (avoids find of entire math
+       // inset when match at start of it)
+       size_t d;
+       DocIterator old_cur(cur.buffer());
+       do {
+               LYXERR(Debug::FIND, "Forwarding one step (searching for innermost match)");
+               d = cur.depth();
+               old_cur = cur;
+               cur.forwardPos();
+       } while (cur && cur.depth() > d && match(cur) > 0);
+       cur = old_cur;
+       LASSERT(match(cur) > 0, /* */);
+       LYXERR(Debug::FIND, "Ok");
+
+       // Compute the match length
+       int len = 1;
+       LYXERR(Debug::FIND, "verifying unmatch with len = " << len);
+       while (cur.pos() + len <= cur.lastpos() && match(cur, len) == 0) {
+               ++len;
+               LYXERR(Debug::FIND, "verifying unmatch with len = " << len);
+       }
+       // Length of matched text (different from len param)
+       int old_len = match(cur, len);
+       int new_len;
+       // Greedy behaviour while matching regexps
+       while ((new_len = match(cur, len + 1)) > old_len) {
+               ++len;
+               old_len = new_len;
+               LYXERR(Debug::FIND, "verifying   match with len = " << len);
+       }
+       return len;
+}
+
+
+/** Switch p_buf to point to next document buffer.
+ **
+ ** Return true if restarted from master-document buffer.
+ **
+ ** @note
+ ** Not using p_buf->allRelatives() here, because I'm not sure
+ ** whether or not the returned order is independent of p_buf.
+ **/
+bool next_document_buffer(Buffer * & p_buf) {
+       Buffer *p_master = p_buf;
+       Buffer *p_old;
+       do {
+               p_old = p_master;
+               p_master = const_cast<Buffer *>(p_master->masterBuffer());
+               LYXERR(Debug::FIND, "p_old=" << p_old << ", p_master=" << p_master);
+       } while (p_master != p_old);
+       LASSERT(p_master != NULL, /**/);
+       vector<Buffer *> v_children;
+       /* Root master added as first buffer in the vector */
+       v_children.push_back(p_master);
+       p_master->getChildren(v_children, true);
+       LYXERR(Debug::FIND, "v_children.size()=" << v_children.size());
+       vector<Buffer *>::const_iterator it = find(v_children.begin(), v_children.end(), p_buf);
+       LASSERT(it != v_children.end(), /**/)
+       ++it;
+       if (it == v_children.end()) {
+               p_buf = *v_children.begin();
+               return true;
+       }
+       p_buf = *it;
+       return false;
+}
+
+
+/** Switch p_buf to point to previous document buffer.
+ **
+ ** Return true if restarted from last child buffer.
+ **
+ ** @note
+ ** Not using p_buf->allRelatives() here, because I'm not sure
+ ** whether or not the returned order is independent of p_buf.
+ **/
+bool prev_document_buffer(Buffer * & p_buf) {
+       Buffer *p_master = p_buf;
+       Buffer *p_old;
+       do {
+               p_old = p_master;
+               p_master = const_cast<Buffer *>(p_master->masterBuffer());
+               LYXERR(Debug::FIND, "p_old=" << p_old << ", p_master=" << p_master);
+       } while (p_master != p_old);
+       LASSERT(p_master != NULL, /**/);
+       vector<Buffer *> v_children;
+       /* Root master added as first buffer in the vector */
+       v_children.push_back(p_master);
+       p_master->getChildren(v_children, true);
+       LYXERR(Debug::FIND, "v_children.size()=" << v_children.size());
+       vector<Buffer *>::const_iterator it = find(v_children.begin(), v_children.end(), p_buf);
+       LASSERT(it != v_children.end(), /**/)
+       if (it == v_children.begin()) {
+               it = v_children.end();
+               --it;
+               p_buf = *it;
+               return true;
+       }
+       --it;
+       p_buf = *it;
+       return false;
+}
+
+
+/** Switch p_buf to point to next open buffer.
+ **
+ ** Return true if restarted from first open buffer.
+ **/
+bool next_open_buffer(Buffer * & p_buf) {
+       p_buf = theBufferList().next(p_buf);
+       return p_buf == *theBufferList().begin();
+}
+
+
+/** Switch p_buf to point to previous open buffer.
+ **
+ ** Return true if restarted from last open buffer.
+ **/
+bool prev_open_buffer(Buffer * & p_buf) {
+       p_buf = theBufferList().previous(p_buf);
+       return p_buf == *(theBufferList().end() - 1);
+}
+
+
+/// Finds forward
+int findForwardAdv(DocIterator & cur, MatchStringAdv & match)
+{
+       if (!cur)
+               return 0;
+       int wrap_answer = -1;
+       do {
+               while (cur && !match(cur, -1, false)) {
+                       if (cur.pit() < cur.lastpit())
+                               cur.forwardPar();
+                       else {
+                               cur.forwardPos();
+                       }
+               }
+               for (; cur; cur.forwardPos()) {
+                       if (match(cur))
+                               return findAdvFinalize(cur, match);
+               }
+               // No match has been found in current buffer
+               bool prompt = false;
+               switch (match.opt.scope) {
+               case FindAndReplaceOptions::S_BUFFER:
+                       prompt = true;
+                       break;
+               case FindAndReplaceOptions::S_DOCUMENT:
+                       prompt = next_document_buffer(match.p_buf);
+                       break;
+               case FindAndReplaceOptions::S_OPEN_BUFFERS:
+                       prompt = next_open_buffer(match.p_buf);
+                       break;
+               }
+               if (prompt) {
+                       if (wrap_answer != -1)
+                               break;
+                       wrap_answer = frontend::Alert::prompt(
+                               _("Wrap search?"),
+                               _("End of document/scope reached while searching forward.\n"
+                                       "\n"
+                                       "Continue searching from beginning?"),
+                               0, 1, _("&Yes"), _("&No"));
+               }
+               cur.clear();
+               cur.push_back(CursorSlice(match.p_buf->inset()));
+       } while (wrap_answer != 1);
+       return 0;
+}
+
+
+/// Find the most backward consecutive match within same paragraph while searching backwards.
+void findMostBackwards(DocIterator & cur, MatchStringAdv const & match, int & len) {
+       DocIterator cur_begin = doc_iterator_begin(cur.buffer());
+       len = findAdvFinalize(cur, match);
+       if (cur != cur_begin) {
+               Inset & inset = cur.inset();
+               int old_len;
+               DocIterator old_cur;
+               DocIterator dit2;
+               do {
+                       old_cur = cur;
+                       old_len = len;
+                       cur.backwardPos();
+                       LYXERR(Debug::FIND, "findMostBackwards(): old_cur=" 
+                               << old_cur << ", old_len=" << len << ", cur=" << cur);
+                       dit2 = cur;
+               } while (cur != cur_begin && &cur.inset() == &inset && match(cur)
+                        && (len = findAdvFinalize(dit2, match)) > old_len);
+               cur = old_cur;
+               len = old_len;
+       }
+       LYXERR(Debug::FIND, "findMostBackwards(): cur=" << cur);
+}
+
+/// Finds backwards
+int findBackwardsAdv(DocIterator & cur, MatchStringAdv & match) {
+       if (! cur)
+               return 0;
+       // Backup of original position (for restoring it in case match not found)
+       DocIterator cur_orig(cur);
+       // Position beyond which match is not considered
+       // (set to end of document after wrap-around question)
+       DocIterator cur_orig2(cur);
+       DocIterator cur_begin = doc_iterator_begin(cur.buffer());
+/*     if (match(cur_orig)) */
+/*             findAdvFinalize(cur_orig, match); */
+       int wrap_answer = 0;
+       bool found_match;
+       do {
+               bool pit_changed = false;
+               found_match = false;
+               // Search in current par occurs from start to end, 
+               // but in next loop match is discarded if pos > original pos
+               cur.pos() = 0;
+               found_match = match(cur, -1, false);
+               LYXERR(Debug::FIND, "findBackAdv0: found_match=" << found_match << ", cur: " << cur);
+               while (cur != cur_begin) {
+                       if (found_match)
+                               break;
+                       if (cur.pit() > 0)
+                               --cur.pit();
+                       else
+                               cur.backwardPos();
+                       pit_changed = true;
+                       // Search in previous pars occurs from start to end
+                       cur.pos() = 0;
+                       found_match = match(cur, -1, false);
+                       LYXERR(Debug::FIND, "findBackAdv1: found_match=" 
+                               << found_match << ", cur: " << cur);
+               }
+               if (pit_changed)
+                       cur.pos() = cur.lastpos();
+               else
+                       cur.pos() = cur_orig2.pos();
+               LYXERR(Debug::FIND, "findBackAdv2: cur: " << cur);
+               DocIterator cur_prev_iter;
+               if (found_match) {
+                       while (true) {
+                               found_match=match(cur);
+                               LYXERR(Debug::FIND, "findBackAdv3: found_match=" 
+                                       << found_match << ", cur: " << cur);
+                               if (found_match) {
+                                       int len;
+                                       findMostBackwards(cur, match, len);
+                                       if (&cur.inset() != &cur_orig2.inset()
+                                           || !(cur.pit() == cur_orig2.pit())
+                                           || cur.pos() < cur_orig2.pos())
+                                               return len;
+                               }
+                               // Prevent infinite loop at begin of document
+                               if (cur == cur_begin || cur == cur_prev_iter)
+                                       break;
+                               cur_prev_iter = cur;
+                               cur.backwardPos();
+                       };
+               }
+               // No match has been found in current buffer
+               bool prompt = false;
+               switch (match.opt.scope) {
+               case FindAndReplaceOptions::S_BUFFER:
+                       prompt = true;
+                       break;
+               case FindAndReplaceOptions::S_DOCUMENT:
+                       prompt = prev_document_buffer(match.p_buf);
+                       break;
+               case FindAndReplaceOptions::S_OPEN_BUFFERS:
+                       prompt = prev_open_buffer(match.p_buf);
+                       break;
+               }
+               if (prompt) {
+                       wrap_answer = frontend::Alert::prompt(
+                               _("Wrap search?"),
+                               _("Beginning of document/scope reached while searching backwards\n"
+                                 "\n"
+                                 "Continue searching from end?"),
+                               0, 1, _("&Yes"), _("&No"));
+               }
+               cur = doc_iterator_end(match.p_buf);
+               cur.backwardPos();
+               LYXERR(Debug::FIND, "findBackAdv5: cur: " << cur);
+               cur_orig2 = cur;
+       } while (wrap_answer == 0);
+       cur = cur_orig;
+       return 0;
+}
+
+
+} // anonym namespace
+
+
+docstring stringifyFromForSearch(FindAndReplaceOptions const & opt,
+       DocIterator const & cur, int len)
+{
+       if (!opt.ignoreformat)
+               return latexifyFromCursor(cur, len);
+       else
+               return stringifyFromCursor(cur, len);
+}
+
+
+FindAndReplaceOptions::FindAndReplaceOptions(docstring const & search, bool casesensitive,
+       bool matchword, bool forward, bool expandmacros, bool ignoreformat,
+       bool regexp, docstring const & replace, 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)
+{
+}
+
+
+/** 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 */
+static bool allNonLowercase(DocIterator const & cur, int len) {
+       pos_type end_pos = cur.pos() + len;
+       for (pos_type pos = cur.pos(); pos != end_pos; ++pos)
+               if (isLowerCase(cur.paragraph().getChar(pos)))
+                       return false;
+       return true;
+}
+
+
+/** Check if first letter is upper case and second one is lower case */
+static bool firstUppercase(DocIterator const & cur) {
+       char_type ch1, ch2;
+       if (cur.pos() >= cur.lastpos() - 1) {
+               LYXERR(Debug::FIND, "No upper-case at cur: " << cur);
+               return false;
+       }
+       ch1 = cur.paragraph().getChar(cur.pos());
+       ch2 = cur.paragraph().getChar(cur.pos()+1);
+       bool result = isUpperCase(ch1) && isLowerCase(ch2);
+       LYXERR(Debug::FIND, "firstUppercase(): "
+              << "ch1=" << ch1 << "(" << char(ch1) << "), ch2=" 
+              << ch2 << "(" << char(ch2) << ")"
+              << ", result=" << result << ", cur=" << cur);
+       return result;
+}
+
+
+/** Make first letter of supplied buffer upper-case, and the rest lower-case.
+ **
+ ** \fixme What to do with possible further paragraphs in replace buffer ?
+ **/
+static void changeFirstCase(Buffer & buffer, TextCase first_case, TextCase others_case) {
+       ParagraphList::iterator pit = buffer.paragraphs().begin();
+       pos_type right = pos_type(1);
+       pit->changeCase(buffer.params(), pos_type(0), right, first_case);
+       right = pit->size() + 1;
+       pit->changeCase(buffer.params(), right, right, others_case);
+}
+
+
+/// Perform a FindAdv operation.
+bool findAdv(BufferView * bv, FindAndReplaceOptions const & opt)
+{
+       DocIterator cur = bv->cursor();
+       int match_len = 0;
+
+       if (opt.search.empty()) {
+                       bv->message(_("Search text is empty!"));
+                       return false;
+       }
+//     if (! bv->buffer()) {
+//             bv->message(_("No open document !"));
+//             return false;
+//     }
+
+       MatchStringAdv matchAdv(bv->buffer(), opt);
+       try {
+               if (opt.forward)
+                               match_len = findForwardAdv(cur, matchAdv);
+               else
+                               match_len = findBackwardsAdv(cur, matchAdv);
+       } catch (...) {
+               // This may only be raised by boost::regex()
+               bv->message(_("Invalid regular expression!"));
+               return false;
+       }
+
+       if (match_len == 0) {
+               bv->message(_("Match not found!"));
+               return false;
+       }
+
+       LYXERR(Debug::FIND, "Putting selection at buf=" << matchAdv.p_buf
+               << "cur=" << cur << " with len: " << match_len);
+
+       theApp()->currentWindow()->selectDocumentBuffer(matchAdv.p_buf);
+       bv = theApp()->currentWindow()->documentBufferView();
+
+       bv->putSelectionAt(cur, match_len, ! opt.forward);
+       if (opt.replace == docstring(from_utf8(LYX_FR_NULL_STRING))) {
+               bv->message(_("Match found !"));
+       } else {
+               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())
+               Buffer repl_buffer("", false);
+               repl_buffer.setUnnamed(true);
+               if (repl_buffer.readString(lyx)) {
+                       if (opt.keep_case && match_len >= 2) {
+                               if (cur.inTexted()) {
+                                       if (firstUppercase(cur))
+                                               changeFirstCase(repl_buffer, text_uppercase, text_lowercase);
+                                       else if (allNonLowercase(cur, match_len))
+                                               changeFirstCase(repl_buffer, text_uppercase, text_uppercase);
+                               }
+                       }
+                       cap::cutSelection(bv->cursor(), false, false);
+                       if (! cur.inMathed()) {
+                               LYXERR(Debug::FIND, "Replacing by pasteParagraphList()ing repl_buffer");
+                               cap::pasteParagraphList(bv->cursor(), repl_buffer.paragraphs(),
+                                                       repl_buffer.params().documentClassPtr(),
+                                                       bv->buffer().errorList("Paste"));
+                       } else {
+                               odocstringstream ods;
+                               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);
+                               //repl_buffer.getSourceCode(ods, 0, repl_buffer.paragraphs().size(), false);
+                               docstring repl_latex = ods.str();
+                               LYXERR(Debug::FIND, "Latexified replace_buffer: '" << repl_latex << "'");
+                               string s;
+                               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 << "'");
+                               bv->cursor().niceInsert(repl_latex);
+                       }
+                       bv->putSelectionAt(cur, repl_buffer.paragraphs().begin()->size(), ! opt.forward);
+                       bv->message(_("Match found and replaced !"));
+               } else
+                       LASSERT(false, /**/);
+               // dispatch(FuncRequest(LFUN_SELF_INSERT, opt.replace));
+       }
+
+       return true;
+}
+
+
+void findAdv(BufferView * bv, FuncRequest const & ev)
+{
+       if (!bv || ev.action != LFUN_WORD_FINDADV)
+               return;
+
+       FindAndReplaceOptions opt;
+       istringstream iss(to_utf8(ev.argument()));
+       iss >> opt;
+       findAdv(bv, opt);
+}
+
+
+ostringstream & operator<<(ostringstream & os, lyx::FindAndReplaceOptions const & opt)
+{
+       os << to_utf8(opt.search) << "\nEOSS\n"
+          << opt.casesensitive << ' '
+          << opt.matchword << ' '
+          << opt.forward << ' '
+          << opt.expandmacros << ' '
+          << opt.ignoreformat << ' '
+          << opt.regexp << ' '
+          << to_utf8(opt.replace) << "\nEOSS\n"
+          << opt.keep_case << ' '
+          << int(opt.scope);
+
+       LYXERR(Debug::FIND, "built: " << os.str());
+
+       return os;
+}
+
+istringstream & operator>>(istringstream & is, lyx::FindAndReplaceOptions & opt)
+{
+       LYXERR(Debug::FIND, "parsing");
+       string s;
+       string line;
+       getline(is, line);
+       while (line != "EOSS") {
+               if (! s.empty())
+                               s = s + "\n";
+               s = s + line;
+               if (is.eof())   // Tolerate malformed request
+                               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;
+       is.get();       // Waste space before replace string
+       s = "";
+       getline(is, line);
+       while (line != "EOSS") {
+               if (! s.empty())
+                               s = s + "\n";
+               s = s + line;
+               if (is.eof())   // Tolerate malformed request
+                               break;
+               getline(is, line);
+       }
+       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);
+       return is;
+}
+
 } // lyx namespace