[LyX/2.3.x] Backport qSort deprecation fixes

[Juergen Spitzmueller]

commit aad880454984b6a190f9a667619b2975dbd1b751
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Sat Mar 13 11:46:49 2021 +0100

    Backport qSort deprecation fixes
---
 src/frontends/qt4/GuiBox.cpp       |    2 +-
 src/frontends/qt4/GuiCharacter.cpp |    2 +-
 src/frontends/qt4/GuiExternal.cpp  |    2 +-
 src/frontends/qt4/GuiPrefs.cpp     |    2 +-
 src/frontends/qt4/GuiRef.cpp       |   12 ++++++------
 5 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/src/frontends/qt4/GuiBox.cpp b/src/frontends/qt4/GuiBox.cpp
index 6a991b5..67a1b0c 100644
--- a/src/frontends/qt4/GuiBox.cpp
+++ b/src/frontends/qt4/GuiBox.cpp
@@ -155,7 +155,7 @@ GuiBox::GuiBox(QWidget * parent) : InsetParamsWidget(parent)
 
 	// the background can be uncolored while the frame cannot
 	color_codes_ = colors();
-	qSort(color_codes_.begin(), color_codes_.end(), ColorSorter);
+	sort(color_codes_.begin(), color_codes_.end(), ColorSorter);
 	fillComboColor(backgroundColorCO, true);
 	fillComboColor(frameColorCO, false);
 
diff --git a/src/frontends/qt4/GuiCharacter.cpp b/src/frontends/qt4/GuiCharacter.cpp
index 25a5db0..23b43e0 100644
--- a/src/frontends/qt4/GuiCharacter.cpp
+++ b/src/frontends/qt4/GuiCharacter.cpp
@@ -234,7 +234,7 @@ GuiCharacter::GuiCharacter(GuiView & lv)
 	bar    = barData();
 	strike = strikeData();
 	color  = colorData();
-	qSort(color.begin(), color.end(), ColorSorter);
+	sort(color.begin(), color.end(), ColorSorter);
 
 	language = languageData();
 	language.prepend(LanguagePair(qt_("Default"), "reset"));
diff --git a/src/frontends/qt4/GuiExternal.cpp b/src/frontends/qt4/GuiExternal.cpp
index ba1c171..70bfa1e 100644
--- a/src/frontends/qt4/GuiExternal.cpp
+++ b/src/frontends/qt4/GuiExternal.cpp
@@ -207,7 +207,7 @@ GuiExternal::GuiExternal(GuiView & lv)
 		localizedTemplates.insert(qt_(i1->second.guiName), toqstr(i1->second.lyxName));
 	// Sort alphabetically by (localized) GUI name
 	QStringList keys = localizedTemplates.keys();
-	qSort(keys.begin(), keys.end(), SortLocaleAware);
+	sort(keys.begin(), keys.end(), SortLocaleAware);
 	for (QString & key : keys) {
 		QString const value = localizedTemplates[key];
 		externalCO->addItem(key, value);
diff --git a/src/frontends/qt4/GuiPrefs.cpp b/src/frontends/qt4/GuiPrefs.cpp
index f40f8fc..5e91c62 100644
--- a/src/frontends/qt4/GuiPrefs.cpp
+++ b/src/frontends/qt4/GuiPrefs.cpp
@@ -1204,7 +1204,7 @@ PrefColors::PrefColors(GuiPreferences * form)
 			continue;
 		lcolors_.push_back(lc);
 	}
-	qSort(lcolors_.begin(), lcolors_.end(), ColorSorter);
+	sort(lcolors_.begin(), lcolors_.end(), ColorSorter);
 	vector<ColorCode>::const_iterator cit = lcolors_.begin();
 	vector<ColorCode>::const_iterator const end = lcolors_.end();
 	for (; cit != end; ++cit) {
diff --git a/src/frontends/qt4/GuiRef.cpp b/src/frontends/qt4/GuiRef.cpp
index 6dae4b1..554cd08 100644
--- a/src/frontends/qt4/GuiRef.cpp
+++ b/src/frontends/qt4/GuiRef.cpp
@@ -471,19 +471,19 @@ void GuiRef::redoRefs()
 		}
 	}
 	// sort categories case-intensively
-	qSort(refsCategories.begin(), refsCategories.end(),
+	sort(refsCategories.begin(), refsCategories.end(),
 	      caseInsensitiveLessThan /*defined above*/);
 	if (noprefix)
 		refsCategories.insert(0, qt_("<No prefix>"));
 
-	QString const sort = sortingCO->isEnabled() ?
+	QString const sort_method = sortingCO->isEnabled() ?
 				sortingCO->itemData(sortingCO->currentIndex()).toString()
 				: QString();
-	if (sort == "nocase")
-		qSort(refsStrings.begin(), refsStrings.end(),
+	if (sort_method == "nocase")
+		sort(refsStrings.begin(), refsStrings.end(),
 		      caseInsensitiveLessThan /*defined above*/);
-	else if (sort == "case")
-		qSort(refsStrings.begin(), refsStrings.end());
+	else if (sort_method == "case")
+		sort(refsStrings.begin(), refsStrings.end());
 
 	if (groupCB->isChecked()) {
 		QList<QTreeWidgetItem *> refsCats;