Implement buffer-anonymize more efficiently

The work is done now in Paragraph::anonymize().

Move the handling of the lfun to Buffer class.

src/Buffer.cpp

@@ -2569,15 +2569,16 @@ bool Buffer::getStatus(FuncRequest const & cmd, FuncStatus & flag)
 		flag.setOnOff(params().output_changes);
 		break;
 
-	case LFUN_BUFFER_TOGGLE_COMPRESSION: {
+	case LFUN_BUFFER_TOGGLE_COMPRESSION:
 		flag.setOnOff(params().compressed);
 		break;
-	}
 
-	case LFUN_BUFFER_TOGGLE_OUTPUT_SYNC: {
+	case LFUN_BUFFER_TOGGLE_OUTPUT_SYNC:
 		flag.setOnOff(params().output_sync);
 		break;
-	}
+
+	case LFUN_BUFFER_ANONYMIZE:
+		break;
 
 	default:
 		return false;
@@ -2849,6 +2850,15 @@ void Buffer::dispatch(FuncRequest const & func, DispatchResult & dr)
 		params().output_sync = !params().output_sync;
 		break;
 
+	case LFUN_BUFFER_ANONYMIZE: {
+		undo().recordUndoFullBuffer(CursorData());
+		CursorData cur(doc_iterator_begin(this));
+		for ( ; cur ; cur.forwardPar())
+			cur.paragraph().anonymize();
+		dr.forceBufferUpdate();
+		break;
+	}
+
 	default:
 		dispatched = false;
 		break;

src/BufferView.cpp

@@ -1134,7 +1134,6 @@ bool BufferView::getStatus(FuncRequest const & cmd, FuncStatus & flag)
 	case LFUN_WORD_FIND_FORWARD:
 	case LFUN_WORD_FIND_BACKWARD:
 	case LFUN_WORD_REPLACE:
-	case LFUN_BUFFER_ANONYMIZE:
 	case LFUN_MARK_OFF:
 	case LFUN_MARK_ON:
 	case LFUN_MARK_TOGGLE:
@@ -1622,15 +1621,6 @@ void BufferView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
 		break;
 	}
 
-	case LFUN_BUFFER_ANONYMIZE: {
-		for (char c = '0'; c <= 'Z'; c++) {
-			odocstringstream ss;
-			ss << "a\n" << c << "\n0 0 1 1 0";
-			lyx::dispatch(FuncRequest(LFUN_WORD_REPLACE, ss.str()));
-		}
-		break;
-	}
-
 	case LFUN_WORD_FINDADV: {
 		FindAndReplaceOptions opt;
 		istringstream iss(to_utf8(cmd.argument()));

src/Paragraph.cpp

@@ -4148,6 +4148,15 @@ SpellChecker::Result Paragraph::spellCheck(pos_type & from, pos_type & to,
 }
 
 
+void Paragraph::anonymize()
+{
+	// This is a very crude anonymization for now
+	for (char_type & c : d->text_)
+		if (isLetterChar(c) || isNumber(c))
+			c = 'a';
+}
+
+
 void Paragraph::Private::markMisspelledWords(
 	pos_type const & first, pos_type const & last,
 	SpellChecker::Result result,

src/Paragraph.h

@@ -505,6 +505,10 @@ public:
 	/// presently used only in the XHTML output routines.
 	std::string magicLabel() const;
 
+	/// anonymizes the paragraph contents (but not the paragraphs
+	/// contained inside it. Does not handle undo.
+	void anonymize();
+
 private:
 	/// Expand the counters for the labelstring of \c layout
 	docstring expandParagraphLabel(Layout const &, BufferParams const &,