Add a "noprefix" option to the "labelonly" version of the reference

inset.

If the reference is "sec:mysec", then this will output just "mysec".
This is what is needed, e.g., to use refstyle's range commands, e.g.,
    \secrangeref{mysec1}{mysec2}
You *cannot* use:
    \secrangeref{sec:mysec1}{sec:mysec2}
even if those are the actual labels.

Eventually, I'd like to add native support for this, but I'm a bit
frightened of trying to make the reference dialog support multiple
selections.

lib/lyx2lyx/lyx_2_3.py

@@ -1082,7 +1082,7 @@ def revert_labelonly(document):
             i = j + 1
             continue
         document.body[i:j+1] = put_cmd_in_ert([label])
-        i = j + 1
+        i += 1
 
 
 def revert_plural_refs(document):
@@ -1131,8 +1131,46 @@ def revert_plural_refs(document):
             cmd += "[s]"
         cmd += "{" + suffix + "}"
         document.body[i:j+1] = put_cmd_in_ert([cmd])
-        i = j + 1
-    
+        i += 1
+
+
+def revert_noprefix(document):
+    " Revert labelonly tags with 'noprefix' set "
+    i = 0
+    while (True):
+        i = find_token(document.body, "\\begin_inset CommandInset ref", i)
+        if i == -1:
+            return
+        j = find_end_of_inset(document.body, i)
+        if j == -1:
+            document.warning("Can't find end of reference inset at line %d!!" %(i))
+            i += 1
+            continue
+        k = find_token(document.body, "LatexCommand labelonly", i, j)
+        if k == -1:
+            i = j
+            continue
+        noprefix = get_bool_value(document.body, "noprefix", i, j)
+        if not noprefix:
+            del_token(document.body, "noprefix", i, j)
+            i = j
+            continue
+        label = get_quoted_value(document.body, "reference", i, j)
+        if not label:
+            document.warning("Can't find label for reference at line %d!" %(i))
+            i = j + 1
+            continue
+        try:
+            (prefix, suffix) = label.split(":", 1)
+        except:
+            document.warning("No `:' separator in formatted reference at line %d!" % (i))
+            # we'll leave this as an ordinary labelonly reference
+            del_token(document.body, "noprefix", i, j)
+            i = j
+            continue
+        document.body[i:j+1] = put_cmd_in_ert([suffix])
+        i += 1
+
 
 ##
 # Conversion hub
@@ -1157,10 +1195,12 @@ convert = [
            [523, []],
            [524, []],
            [525, []],
-           [526, []]
+           [526, []],
+           [527, []]
           ]
 
 revert =  [
+           [526, [revert_noprefix]],
            [525, [revert_plural_refs]],
            [524, [revert_labelonly]],
            [523, [revert_crimson, revert_cochinealmath]],

src/frontends/qt4/GuiRef.cpp

@@ -110,6 +110,8 @@ GuiRef::GuiRef(GuiView & lv)
 		this, SLOT(changed_adaptor()));
 	connect(capsCB, SIGNAL(clicked()),
 		this, SLOT(changed_adaptor()));
+	connect(noprefixCB, SIGNAL(clicked()),
+		this, SLOT(changed_adaptor()));
 
 	enableBoxes();
 
@@ -137,9 +139,12 @@ void GuiRef::enableBoxes()
 {
 	bool const isFormatted = 
 	    (InsetRef::getName(typeCO->currentIndex()) == "formatted");
+	bool const isLabelOnly = 
+	    (InsetRef::getName(typeCO->currentIndex()) == "labelonly");
 	bool const usingRefStyle = buffer().params().use_refstyle;
 	pluralCB->setEnabled(isFormatted && usingRefStyle);
 	capsCB->setEnabled (isFormatted && usingRefStyle);
+	noprefixCB->setEnabled (isLabelOnly && usingRefStyle);
 }
 
 
@@ -301,6 +306,7 @@ void GuiRef::updateContents()
 
 	pluralCB->setChecked(params_["plural"] == "true");
 	capsCB->setChecked(params_["caps"] == "true");
+	noprefixCB->setChecked(params_["noprefix"] == "true");
 
 	// insert buffer list
 	bufferCO->clear();
@@ -342,6 +348,8 @@ void GuiRef::applyView()
 	      from_ascii("true") : from_ascii("false");
 	params_["caps"] = capsCB->isChecked() ? 
 	      from_ascii("true") : from_ascii("false");
+	params_["noprefix"] = noprefixCB->isChecked() ? 
+	      from_ascii("true") : from_ascii("false");
 	restored_buffer_ = bufferCO->currentIndex();
 }
 

src/frontends/qt4/ui/RefUi.ui

@@ -403,6 +403,16 @@
        </property>
       </widget>
      </item>
+     <item>
+      <widget class="QCheckBox" name="noprefixCB">
+       <property name="toolTip">
+        <string>Do not output part of label before &quot;:&quot;</string>
+       </property>
+       <property name="text">
+        <string>No Prefix</string>
+       </property>
+      </widget>
+     </item>
     </layout>
    </item>
   </layout>

src/insets/InsetRef.cpp

@@ -71,6 +71,7 @@ ParamInfo const & InsetRef::findInfo(string const & /* cmdName */)
 				ParamInfo::HANDLING_ESCAPE);
 		param_info_.add("plural", ParamInfo::LYX_INTERNAL);
 		param_info_.add("caps", ParamInfo::LYX_INTERNAL);
+		param_info_.add("noprefix", ParamInfo::LYX_INTERNAL);
 	}
 	return param_info_;
 }
@@ -110,7 +111,7 @@ docstring InsetRef::getFormattedCmd(docstring const & ref,
 
 	// we have to have xxx:xxxxx...
 	if (label.empty()) {
-		LYXERR0("Label `" << ref << "' contains no prefix.");
+		LYXERR0("Label `" << ref << "' contains no `:' separator.");
 		label = ref;
 		prefix = from_ascii("");
 		return defcmd;
@@ -181,7 +182,19 @@ void InsetRef::latex(otexstream & os, OutputParams const & rp) const
 		os << '{' << label << '}';
 	}
 	else if (cmd == "labelonly") {
-		os << getParam("reference");
+		docstring const & ref = getParam("reference");
+		if (getParam("noprefix") != "true")
+			os << ref;
+		else {
+			docstring prefix;
+			docstring suffix = split(ref, prefix, ':');
+			if (suffix.empty()) {
+		    LYXERR0("Label `" << ref << "' contains no `:' separator.");
+				os << ref;
+			} else {
+				os << suffix;
+			}
+		}
 	}
 	else {
 		// We don't want to output p_["name"], since that is only used 
@@ -303,13 +316,29 @@ void InsetRef::updateBuffer(ParIterator const & it, UpdateType)
 	buffer().addReference(ref, this, it);
 
 	docstring label;
+	string const & cmd = getCmdName();
 	for (int i = 0; !types[i].latex_name.empty(); ++i) {
-		if (getCmdName() == types[i].latex_name) {
+		if (cmd == types[i].latex_name) {
 			label = _(types[i].short_gui_name);
 			break;
 		}
 	}
-	label += ref;
+
+	if (cmd != "labelonly")
+		label += ref;
+	else {
+		if (getParam("noprefix") != "true")
+			label += ref;
+		else {
+			docstring prefix;
+			docstring suffix = split(ref, prefix, ':');
+			if (suffix.empty()) {
+				label += ref;
+			} else {
+				label += suffix;
+			}
+		}
+	}
 	
 	if (!buffer().params().isLatex() && !getParam("name").empty()) {
 		label += "||";

src/tex2lyx/text.cpp

@@ -3498,6 +3498,7 @@ void parse_text(Parser & p, ostream & os, unsigned flags, bool outer,
 			   << "\"\n";
 			os << "plural \"false\"\n";
 			os << "caps \"false\"\n";
+			os << "noprefix \"false\"\n";
 			end_inset(os);
 			preamble.registerAutomaticallyLoadedPackage("refstyle");
 		}
@@ -3516,6 +3517,7 @@ void parse_text(Parser & p, ostream & os, unsigned flags, bool outer,
 				   << "\"\n";
 				os << "plural \"false\"\n";
 				os << "caps \"false\"\n";
+				os << "noprefix \"false\"\n";
 				end_inset(os);
 				if (t.cs() == "vref" || t.cs() == "vpageref")
 					preamble.registerAutomaticallyLoadedPackage("varioref");

src/version.h

@@ -32,8 +32,8 @@ extern char const * const lyx_version_info;
 
 // Do not remove the comment below, so we get merge conflict in
 // independent branches. Instead add your own.
-#define LYX_FORMAT_LYX 526 // rgh: labelonly for references
-#define LYX_FORMAT_TEX2LYX 526
+#define LYX_FORMAT_LYX 527 // rgh: labelonly for references
+#define LYX_FORMAT_TEX2LYX 527
 
 #if LYX_FORMAT_TEX2LYX != LYX_FORMAT_LYX
 #ifndef _MSC_VER