InsetSpace support for

- \negmedspace and \negthickspace outside of math
- \enspace, \hspace*, \hspace*{\fill} and \hfill inside math
(fileformat change)

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@39557 a592a061-630c-0410-9148-cb99ea01b6c8

development/FORMAT

@@ -11,6 +11,12 @@ adjustments are made to tex2lyx and bugs are fixed in lyx2lyx.
 
 -----------------------
 
+2011-08-30 Uwe Stöhr <uwestoehr@web.de>
+	* Format incremented to 416 (r3xxxx)
+	  support for \negmedspace and \negthinspace outside of math
+	  support for \hfill, \enspace and \hspace* in math
+	  No new InsetSpace parameters
+
 2011-07-30 Uwe Stöhr <uwestoehr@web.de>
 	* Format incremented to 415 (r39464)
 	  support for the LaTeX-package undertilde (fix bug 6622)

lib/lyx2lyx/lyx_2_1.py

@@ -78,7 +78,6 @@ def convert_undertilde(document):
 
 def revert_undertilde(document):
     " Load undertilde if used in the document "
-
     undertilde = find_token(document.header, "\\use_undertilde" , 0)
     if undertilde == -1:
       document.warning("No \\use_undertilde line. Assuming auto.")
@@ -118,16 +117,63 @@ def revert_undertilde(document):
       i = j
 
 
+def revert_negative_space(document):
+    "Revert InsetSpace negmedspace and negthickspace into its TeX-code counterpart"
+    i = 0
+    j = 0
+    reverted = False
+    while True:
+      i = find_token(document.body, "\\begin_inset space \\negmedspace{}", i)
+      if i == -1:
+        j = find_token(document.body, "\\begin_inset space \\negthickspace{}", j)
+        if j == -1:
+          # load amsmath in the preamble if not already loaded if we are at the end of checking
+          if reverted == True:
+            i = find_token(document.header, "\\use_amsmath 2", 0)
+            if i == -1:
+              add_to_preamble(document, ["\\@ifundefined{negthickspace}{\\usepackage{amsmath}}"])
+          return
+      if i == -1:
+        return
+      end = find_end_of_inset(document.body, i)
+      subst = put_cmd_in_ert("\\negmedspace{}")
+      document.body[i:end + 1] = subst
+      j = find_token(document.body, "\\begin_inset space \\negthickspace{}", j)
+      if j == -1:
+        return
+      end = find_end_of_inset(document.body, j)
+      subst = put_cmd_in_ert("\\negthickspace{}")
+      document.body[j:end + 1] = subst
+      reverted = True
+
+
+def revert_math_spaces(document):
+    "Revert formulas with protected custom space and protected hfills to TeX-code"
+    i = 0
+    while True:
+      i = find_token(document.body, "\\begin_inset Formula", i)
+      if i == -1:
+        return
+      j = document.body[i].find("\\hspace*")
+      if j != -1:
+        end = find_end_of_inset(document.body, i)
+        subst = put_cmd_in_ert(document.body[i][21:])
+        document.body[i:end + 1] = subst
+      i = i + 1
+
+
 ##
 # Conversion hub
 #
 
 supported_versions = ["2.1.0","2.1"]
 convert = [[414, []],
-           [415, [convert_undertilde]]
+           [415, [convert_undertilde]],
+           [416, []]
           ]
 
-revert =  [[414, [revert_undertilde]],
+revert =  [[415, [revert_negative_space,revert_math_spaces]],
+           [414, [revert_undertilde]],
            [413, [revert_visible_space]]
           ]
 

lib/symbols

@@ -160,8 +160,11 @@ medspace          space       none
 ;                 space       none
 thickspace        space       none
 enskip            space       none
+enspace           space       none
 quad              space       none
 qquad             space       none
+hfill             space       none
+hspace*           space       none
 hspace            space       none
 
 # styles

src/Buffer.cpp

@@ -128,7 +128,7 @@ namespace {
 
 // Do not remove the comment below, so we get merge conflict in
 // independent branches. Instead add your own.
-int const LYX_FORMAT = 415; //uwestoehr : support for package undertilde (bug 6622)
+int const LYX_FORMAT = 416; //uwestoehr : support for horizontal spaces (bug 7728)
 
 typedef map<string, bool> DepClean;
 typedef map<docstring, pair<InsetLabel const *, Buffer::References> > RefCache;

src/LyXAction.cpp

@@ -476,8 +476,8 @@ void LyXAction::init()
  * \li Action: Inserts one of horizontal space insets.
  * \li Syntax: space-insert <NAME> [<LEN>]
  * \li Params: <NAME>: normal, protected, visible, thin, quad, qquad, enspace,
-                       enskip, negthinspace, hfill, hfill*, dotfill, hrulefill, hspace,
+                       enskip, negthinspace, negmedspace, negthickspace, hfill,
-                       hspace* \n
+                       hfill*, dotfill, hrulefill, hspace, hspace* \n
                <LEN>: length for custom spaces (hspace, hspace* for protected)
  * \li Origin: JSpitzm, 20 May 2003, Mar 17 2008
  * \endvar

src/factory.cpp

@@ -400,9 +400,9 @@ Inset * createInsetHelper(Buffer * buf, FuncRequest const & cmd)
 				isp.kind = InsetSpaceParams::ENSKIP;
 			else if (name == "negthinspace")
 				isp.kind = InsetSpaceParams::NEGTHIN;
-			else if (isp.math && name == "negmedspace")
+			else if (name == "negmedspace")
 				isp.kind = InsetSpaceParams::NEGMEDIUM;
-			else if (isp.math && name == "negthickspace")
+			else if (name == "negthickspace")
 				isp.kind = InsetSpaceParams::NEGTHICK;
 			else if (name == "hfill")
 				isp.kind = InsetSpaceParams::HFILL;

src/frontends/qt4/GuiHSpace.cpp

@@ -42,26 +42,29 @@ GuiHSpace::GuiHSpace(bool math_mode, QWidget * parent)
 
 	spacingCO->clear();
 	if (math_mode_) {
-		spacingCO->addItem(qt_("Thin Space"));
+		spacingCO->addItem(qt_("Thin Space"), toqstr("thinspace"));
-		spacingCO->addItem(qt_("Medium Space"));
+		spacingCO->addItem(qt_("Medium Space"), toqstr("medspace"));
-		spacingCO->addItem(qt_("Thick Space"));
+		spacingCO->addItem(qt_("Thick Space"), toqstr("thickspace"));
-		spacingCO->addItem(qt_("Negative Thin Space"));
+		spacingCO->addItem(qt_("Negative Thin Space"), toqstr("negthinspace"));
-		spacingCO->addItem(qt_("Negative Medium Space"));
+		spacingCO->addItem(qt_("Negative Medium Space"), toqstr("negmedspace"));
-		spacingCO->addItem(qt_("Negative Thick Space"));
+		spacingCO->addItem(qt_("Negative Thick Space"), toqstr("negthickspace"));
-		spacingCO->addItem(qt_("Half Quad (0.5 em)"));
+		spacingCO->addItem(qt_("Half Quad (0.5 em)"), toqstr("halfquad"));
-		spacingCO->addItem(qt_("Quad (1 em)"));
+		spacingCO->addItem(qt_("Quad (1 em)"), toqstr("quad"));
-		spacingCO->addItem(qt_("Double Quad (2 em)"));
+		spacingCO->addItem(qt_("Double Quad (2 em)"), toqstr("qquad"));
-		spacingCO->addItem(qt_("Custom"));
+		spacingCO->addItem(qt_("Horizontal Fill"), toqstr("hfill"));
+		spacingCO->addItem(qt_("Custom"), toqstr("custom"));
 	} else {
-		spacingCO->addItem(qt_("Interword Space"));
+		spacingCO->addItem(qt_("Interword Space"), toqstr("normal"));
-		spacingCO->addItem(qt_("Thin Space"));
+		spacingCO->addItem(qt_("Thin Space"), toqstr("thinspace"));
-		spacingCO->addItem(qt_("Negative Thin Space"));
+		spacingCO->addItem(qt_("Negative Thin Space"), toqstr("negthinspace"));
-		spacingCO->addItem(qt_("Half Quad (0.5 em)"));
+		spacingCO->addItem(qt_("Negative Medium Space"), toqstr("negmedspace"));
-		spacingCO->addItem(qt_("Quad (1 em)"));
+		spacingCO->addItem(qt_("Negative Thick Space"), toqstr("negthickspace"));
-		spacingCO->addItem(qt_("Double Quad (2 em)"));
+		spacingCO->addItem(qt_("Half Quad (0.5 em)"), toqstr("halfquad"));
-		spacingCO->addItem(qt_("Horizontal Fill"));
+		spacingCO->addItem(qt_("Quad (1 em)"), toqstr("quad"));
-		spacingCO->addItem(qt_("Custom"));
+		spacingCO->addItem(qt_("Double Quad (2 em)"), toqstr("qquad"));
-		spacingCO->addItem(qt_("Visible Space"));
+		spacingCO->addItem(qt_("Horizontal Fill"), toqstr("hfill"));
+		spacingCO->addItem(qt_("Custom"), toqstr("custom"));
+		spacingCO->addItem(qt_("Visible Space"), toqstr("visible"));
 	}
 
 	connect(spacingCO, SIGNAL(highlighted(QString)),
@@ -96,21 +99,14 @@ void GuiHSpace::changedSlot()
 
 void GuiHSpace::enableWidgets()
 {
-	int const selection = spacingCO->currentIndex();
+	QString const selection = spacingCO->itemData(spacingCO->currentIndex()).toString();
-	bool const custom = (math_mode_ && selection == 9) ||
+	bool const custom = selection == "custom";
-		(!math_mode_ && selection == 7);
 	valueLE->setEnabled(custom);
 	unitCO->setEnabled(custom);
-	if (math_mode_) {
+	fillPatternCO->setEnabled(!math_mode_ && selection == "hfill");
-		fillPatternCO->setEnabled(false);
+	bool const no_pattern = fillPatternCO->currentIndex() == 0 || math_mode_;
-		keepCB->setEnabled(false);
-		return;
-	}
-	fillPatternCO->setEnabled(selection == 6);
-	bool const no_pattern = fillPatternCO->currentIndex() == 0;
 	bool const enable_keep =
-		selection == 0 || selection == 3  ||
+		selection == "normal" || selection == "halfquad" || (selection == "hfill" && no_pattern) || custom;
-		(selection == 6 && no_pattern) || custom;
 	keepCB->setEnabled(enable_keep);
 }
 
@@ -121,97 +117,95 @@ void GuiHSpace::paramsToDialog(Inset const * inset)
 		? static_cast<InsetMathSpace const *>(inset)->params()
 		: static_cast<InsetSpace const *>(inset)->params();
 
-	int item = 0;
+	QString item;
 	int pattern = 0;
 	bool protect = false;
 	switch (params.kind) {
 		case InsetSpaceParams::NORMAL:
-			item = 0;
+			item = "normal";
 			break;
 		case InsetSpaceParams::PROTECTED:
-			item = 0;
+			item = "normal";
-			protect = !params.math;
+			protect = true;
 			break;
 		case InsetSpaceParams::VISIBLE:
-			item = 8;
+			item = "visible";
 			protect = true;
 			break;
 		case InsetSpaceParams::THIN:
-			item = params.math ? 0 : 1;
+			item = "thinspace";
 			break;
 		case InsetSpaceParams::MEDIUM:
-			item = 1;
+			item = "medspace";
 			break;
 		case InsetSpaceParams::THICK:
-			item = params.math ? 2 : 1;
+			item = "thickspace";
 			break;
 		case InsetSpaceParams::NEGTHIN:
-			item = params.math ? 3 : 2;
+			item = "negthinspace";
 			break;
 		case InsetSpaceParams::NEGMEDIUM:
-			item = params.math ? 4 : 2;
+			item = "negmedspace";
 			break;
 		case InsetSpaceParams::NEGTHICK:
-			item = params.math ? 5 : 2;
+			item = "negthickspace";
 			break;
 		case InsetSpaceParams::ENSKIP:
-			item = params.math ? 6 : 3;
+			item = "halfquad";
 			break;
 		case InsetSpaceParams::ENSPACE:
-			item = params.math ? 6 : 3;
+			item = "halfquad";
-			protect = !params.math;
+			protect = true;
 			break;
 		case InsetSpaceParams::QUAD:
-			item = params.math ? 7 : 4;
+			item = "quad";
 			break;
 		case InsetSpaceParams::QQUAD:
-			item = params.math ? 8 : 5;
+			item = "qquad";
 			break;
 		case InsetSpaceParams::HFILL:
-			item = params.math ? 3 : 6;
+			item = "hfill";
 			break;
 		case InsetSpaceParams::HFILL_PROTECTED:
-			item = params.math ? 3 : 6;
+			item = "hfill";
-			protect = !params.math;
+			protect = true;
 			break;
 		case InsetSpaceParams::DOTFILL:
-			item = params.math ? 3 : 6;
+			item = "hfill";
 			pattern = 1;
 			break;
 		case InsetSpaceParams::HRULEFILL:
-			item = params.math ? 3 : 6;
+			item = "hfill";
 			pattern = 2;
 			break;
 		case InsetSpaceParams::LEFTARROWFILL:
-			item = params.math ? 3 : 6;
+			item = "hfill";
 			pattern = 3;
 			break;
 		case InsetSpaceParams::RIGHTARROWFILL:
-			item = params.math ? 3 : 6;
+			item = "hfill";
 			pattern = 4;
 			break;
 		case InsetSpaceParams::UPBRACEFILL:
-			item = params.math ? 3 : 6;
+			item = "hfill";
 			pattern = 5;
 			break;
 		case InsetSpaceParams::DOWNBRACEFILL:
-			item = params.math ? 3 : 6;
+			item = "hfill";
 			pattern = 6;
 			break;
 		case InsetSpaceParams::CUSTOM:
-			item = params.math ? 9 : 7;
+			item = "custom";
 			break;
 		case InsetSpaceParams::CUSTOM_PROTECTED:
-			item = params.math ? 9 : 7;
+			item = "custom";
-			protect = !params.math;
+			protect = true;
 			break;
 	}
-	spacingCO->setCurrentIndex(item);
+	spacingCO->setCurrentIndex(spacingCO->findData(item));
 	fillPatternCO->setCurrentIndex(pattern);
 	keepCB->setChecked(protect);
-	if (math_mode_) {
+	if (item == "halfquad") {
-		keepCB->setToolTip(qt_("Insert the spacing even after a line break"));
-	} else if (item == 3) {
 		keepCB->setToolTip(qt_("Insert the spacing even after a line break.\n"
 				       "Note that a protected Half Quad will be turned into\n"
 				       "a vertical space if used at the beginning of a paragraph!"));
@@ -219,7 +213,7 @@ void GuiHSpace::paramsToDialog(Inset const * inset)
 		keepCB->setToolTip(qt_("Insert the spacing even after a line break"));
 	}
 	Length::UNIT const default_unit = Length::defaultUnit();
-	if (item == (params.math ? 9 : 7)) {
+	if (item == "custom") {
 		string length = params.length.asString();
 		lengthToWidgets(valueLE, unitCO, length, default_unit);
 	} else
@@ -229,61 +223,37 @@ void GuiHSpace::paramsToDialog(Inset const * inset)
 }
 
 
-docstring GuiHSpace::dialogToMathParams() const
-{
-	InsetSpaceParams params(true);
-	switch (spacingCO->currentIndex()) {
-	case 0: params.kind = InsetSpaceParams::THIN;      break;
-	case 1: params.kind = InsetSpaceParams::MEDIUM;    break;
-	case 2: params.kind = InsetSpaceParams::THICK;     break;
-	case 3: params.kind = InsetSpaceParams::NEGTHIN;   break;
-	case 4: params.kind = InsetSpaceParams::NEGMEDIUM; break;
-	case 5: params.kind = InsetSpaceParams::NEGTHICK;  break;
-	case 6: params.kind = InsetSpaceParams::ENSKIP;    break;
-	case 7: params.kind = InsetSpaceParams::QUAD;      break;
-	case 8: params.kind = InsetSpaceParams::QQUAD;     break;
-	case 9:
-		params.kind = InsetSpaceParams::CUSTOM;
-		params.length = GlueLength(widgetsToLength(valueLE, unitCO));
-		break;
-	}
-	return from_ascii(InsetSpace::params2string(params));
-}
-
-
 docstring GuiHSpace::dialogToParams() const
 {
-	if (math_mode_)
+	InsetSpaceParams params = math_mode_ ?
-		return dialogToMathParams();
+		InsetSpaceParams(true) : InsetSpaceParams(false);
 
-	InsetSpaceParams params(false);
+	QString const item =
+		spacingCO->itemData(spacingCO->currentIndex()).toString();
 
-	switch (spacingCO->currentIndex()) {
+	if (item == "normal")
-		case 0:
+		params.kind = keepCB->isChecked() ?
-			if (keepCB->isChecked())
+			InsetSpaceParams::PROTECTED : InsetSpaceParams::NORMAL;
-				params.kind = InsetSpaceParams::PROTECTED;
+	else if (item == "thinspace")
-			else
-				params.kind = InsetSpaceParams::NORMAL;
-			break;
-		case 1:
 		params.kind = InsetSpaceParams::THIN;
-			break;
+	else if (item == "medspace")
-		case 2:
+		params.kind = InsetSpaceParams::MEDIUM;
+	else if (item == "thickspace")
+		params.kind = InsetSpaceParams::THICK;
+	else if (item == "negthinspace")
 		params.kind = InsetSpaceParams::NEGTHIN;
-			break;
+	else if (item == "negmedspace")
-		case 3:
+		params.kind = InsetSpaceParams::NEGMEDIUM;
-			if (keepCB->isChecked())
+	else if (item == "negthickspace")
-				params.kind = InsetSpaceParams::ENSPACE;
+		params.kind = InsetSpaceParams::NEGTHICK;
-			else
+	else if (item == "halfquad")
-				params.kind = InsetSpaceParams::ENSKIP;
+		params.kind = keepCB->isChecked() ?
-			break;
+			InsetSpaceParams::ENSPACE : InsetSpaceParams::ENSKIP;
-		case 4:
+	else if (item == "quad")
 			params.kind = InsetSpaceParams::QUAD;
-			break;
+	else if (item == "qquad")
-		case 5:
 			params.kind = InsetSpaceParams::QQUAD;
-			break;
+	else if (item == "hfill") {
-		case 6:
 		switch (fillPatternCO->currentIndex()) {
 		case 1:
 			params.kind = InsetSpaceParams::DOTFILL;
@@ -310,18 +280,13 @@ docstring GuiHSpace::dialogToParams() const
 				params.kind = InsetSpaceParams::HFILL;
 			break;
 		}
-			break;
+	} else if (item == "custom") {
-		case 7:
+			params.kind = keepCB->isChecked() ?
-			if (keepCB->isChecked())
+				InsetSpaceParams::CUSTOM_PROTECTED : InsetSpaceParams::CUSTOM;
-				params.kind = InsetSpaceParams::CUSTOM_PROTECTED;
-			else
-				params.kind = InsetSpaceParams::CUSTOM;
 			params.length = GlueLength(widgetsToLength(valueLE, unitCO));
-			break;
+	} else if (item == "visible") 
-		case 8:
 		params.kind = InsetSpaceParams::VISIBLE;
-			break;
+
-	}
 	return from_ascii(InsetSpace::params2string(params));
 }
 
@@ -330,7 +295,7 @@ bool GuiHSpace::checkWidgets() const
 {
 	if (!InsetParamsWidget::checkWidgets())
 		return false;
-	return spacingCO->currentIndex() != (math_mode_ ? 9 : 7)
+	return spacingCO->itemData(spacingCO->currentIndex()).toString() != "custom"
 		|| !valueLE->text().isEmpty();
 }
 

src/frontends/qt4/GuiHSpace.h

@@ -34,15 +34,13 @@ private Q_SLOTS:
 private:
 	/// \name InsetParamsWidget inherited methods
 	//@{
-	InsetCode insetCode() const { return SPACE_CODE; }
+	InsetCode insetCode() const { return math_mode_ ? MATH_SPACE_CODE : SPACE_CODE; }
 	FuncCode creationCode() const { return LFUN_INSET_INSERT; }
 	void paramsToDialog(Inset const *);
 	docstring dialogToParams() const;
 	bool checkWidgets() const;
 	//@}
 	///
-	docstring dialogToMathParams() const;
-	///
 	bool const math_mode_;
 };
 

src/insets/InsetSpace.cpp

@@ -488,9 +488,9 @@ void InsetSpaceParams::read(Lexer & lex)
 		kind = InsetSpaceParams::ENSKIP;
 	else if (command == "\\negthinspace{}")
 		kind = InsetSpaceParams::NEGTHIN;
-	else if (math && command == "\\negmedspace{}")
+	else if (command == "\\negmedspace{}")
 		kind = InsetSpaceParams::NEGMEDIUM;
-	else if (math && command == "\\negthickspace{}")
+	else if (command == "\\negthickspace{}")
 		kind = InsetSpaceParams::NEGTHICK;
 	else if (command == "\\hfill{}")
 		kind = InsetSpaceParams::HFILL;

src/mathed/InsetMathSpace.cpp

@@ -57,10 +57,14 @@ SpaceInfo space_info[] = {
 	{";",               10,   InsetSpaceParams::THICK,     false,   true,   false},
 	{"thickspace",      10,   InsetSpaceParams::THICK,     false,   true,   false},
 	{"enskip",          10,   InsetSpaceParams::ENSKIP,    false,   true,   false},
+	{"enspace",         10,   InsetSpaceParams::ENSPACE,   false,   true,   false},
 	{"quad",            20,   InsetSpaceParams::QUAD,      false,   true,   false},
 	{"qquad",           40,   InsetSpaceParams::QQUAD,     false,   true,   false},
 	{"lyxnegspace",     -2,   InsetSpaceParams::NEGTHIN,   true,    false,  false},
 	{"lyxposspace",      2,   InsetSpaceParams::THIN,      false,   false,  false},
+	{"hfill",           80,   InsetSpaceParams::HFILL,     false,   true,  false},
+	{"hspace*{\\fill}", 80,   InsetSpaceParams::HFILL_PROTECTED,     false,   true,  false},
+	{"hspace*",          0,   InsetSpaceParams::CUSTOM_PROTECTED,    false,   true,   true},
 	{"hspace",           0,   InsetSpaceParams::CUSTOM,    false,   true,   true},
 };
 
@@ -93,11 +97,12 @@ InsetMathSpace::InsetMathSpace(string const & name, string const & length)
 }
 
 
-InsetMathSpace::InsetMathSpace(Length const & length)
+InsetMathSpace::InsetMathSpace(Length const & length, bool const prot)
 	: space_(defaultSpace), length_(length)
 {
 	for (int i = 0; i < nSpace; ++i)
-		if (space_info[i].name == "hspace") {
+		if ((prot && space_info[i].name == "hspace*")
+			|| (!prot && space_info[i].name == "hspace")) {
 			space_ = i;
 			break;
 		}
@@ -221,6 +226,7 @@ void InsetMathSpace::htmlize(HtmlStream & ms) const
 		ms << from_ascii("&emsp;");
 		break;
 	case InsetSpaceParams::ENSKIP:
+	case InsetSpaceParams::ENSPACE:
 		ms << from_ascii("&ensp;");
 		break;
 	case InsetSpaceParams::QUAD:
@@ -229,7 +235,12 @@ void InsetMathSpace::htmlize(HtmlStream & ms) const
 	case InsetSpaceParams::QQUAD:
 		ms << from_ascii("&emsp;&emsp;");
 		break;
-	case InsetSpaceParams::CUSTOM: {
+	case InsetSpaceParams::HFILL:
+	case InsetSpaceParams::HFILL_PROTECTED:
+		// FIXME: is there a useful HTML entity?
+		break;
+	case InsetSpaceParams::CUSTOM:
+	case InsetSpaceParams::CUSTOM_PROTECTED: {
 		string l = length_.asHTMLString();
 		ms << MTag("span", "width='" + l + "'") 
 		   << from_ascii("&nbsp;") << ETag("span");

src/mathed/InsetMathSpace.h

@@ -28,7 +28,7 @@ public:
 	///
 	explicit InsetMathSpace(std::string const & name, std::string const & length);
 	///
-	explicit InsetMathSpace(Length const & length);
+	explicit InsetMathSpace(Length const & length, bool const prot = false);
 	///
 	InsetMathSpace const * asSpaceInset() const { return this; }
 	///

src/mathed/MathParser.cpp

@@ -1751,12 +1751,17 @@ bool Parser::parse1(InsetMathGrid & grid, unsigned flags,
 			parse(cell->back().nucleus()->cell(0), FLAG_ITEM, InsetMath::TEXT_MODE);
 		}
 
-		else if (t.cs() == "hspace" && nextToken().character() != '*') {
+		else if (t.cs() == "hspace") {
+			bool const prot =  nextToken().character() == '*';
+			if (prot)
+				getToken();
 			docstring const name = t.cs();
 			docstring const arg = parse_verbatim_item();
 			Length length;
-			if (isValidLength(to_utf8(arg), &length))
+			if (prot && arg == "\\fill")
-				cell->push_back(MathAtom(new InsetMathSpace(length)));
+				cell->push_back(MathAtom(new InsetMathSpace("hspace*{\\fill}", "")));
+			else if (isValidLength(to_utf8(arg), &length))
+				cell->push_back(MathAtom(new InsetMathSpace(length, prot)));
 			else {
 				// Since the Length class cannot use length variables
 				// we must not create an InsetMathSpace.