[LyX/master] Support option snippets in the LaTeXHighlighter

[Juergen Spitzmueller]

commit 6603ae22421479618cf0f752bf05a0795d9f7b3d
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Tue Jul 18 15:12:54 2023 +0200

    Support option snippets in the LaTeXHighlighter
---
 src/frontends/qt/GuiDocument.cpp      |    4 ++--
 src/frontends/qt/LaTeXHighlighter.cpp |    7 ++++---
 src/frontends/qt/LaTeXHighlighter.h   |    5 ++++-
 3 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/frontends/qt/GuiDocument.cpp b/src/frontends/qt/GuiDocument.cpp
index e8c8c19..3d71761 100644
--- a/src/frontends/qt/GuiDocument.cpp
+++ b/src/frontends/qt/GuiDocument.cpp
@@ -1774,8 +1774,8 @@ GuiDocument::GuiDocument(GuiView & lv)
 		pdfSupportModule->subjectLE));
 	pdfSupportModule->keywordsLE->setValidator(new NoNewLineValidator(
 		pdfSupportModule->keywordsLE));
-	(void) new LaTeXHighlighter(pdfSupportModule->optionsTE->document(), true, true);
-	(void) new LaTeXHighlighter(pdfSupportModule->metadataTE->document(), true, true);
+	(void) new LaTeXHighlighter(pdfSupportModule->optionsTE->document(), true, true, true);
+	(void) new LaTeXHighlighter(pdfSupportModule->metadataTE->document(), true, true, true);
 
 	for (int i = 0; backref_opts[i][0]; ++i)
 		pdfSupportModule->backrefCO->addItem(qt_(backref_opts_gui[i]));
diff --git a/src/frontends/qt/LaTeXHighlighter.cpp b/src/frontends/qt/LaTeXHighlighter.cpp
index 8336f7a..9e24c72 100644
--- a/src/frontends/qt/LaTeXHighlighter.cpp
+++ b/src/frontends/qt/LaTeXHighlighter.cpp
@@ -20,8 +20,8 @@ namespace lyx {
 namespace frontend {
 
 
-LaTeXHighlighter::LaTeXHighlighter(QTextDocument * parent, bool at_letter, bool keyval)
-	: QSyntaxHighlighter(parent), at_letter_(at_letter), keyval_(keyval)
+LaTeXHighlighter::LaTeXHighlighter(QTextDocument * parent, bool at_letter, bool keyval, bool optsnippet)
+	: QSyntaxHighlighter(parent), at_letter_(at_letter), keyval_(keyval), optsnippet_(optsnippet)
 {
 	auto blend = [](QColor color1, QColor color2) {
 		int r = 0.5 * (color1.red() + color2.red());
@@ -44,8 +44,9 @@ LaTeXHighlighter::LaTeXHighlighter(QTextDocument * parent, bool at_letter, bool
 }
 
 
-void LaTeXHighlighter::highlightBlock(QString const & text)
+void LaTeXHighlighter::highlightBlock(QString const & text_in)
 {
+	QString const text = (optsnippet_) ? '[' + text_in + ']' : text_in;
 	// keyval
 	if (keyval_) {
 		// Highlight key-val options. Used in some option widgets.
diff --git a/src/frontends/qt/LaTeXHighlighter.h b/src/frontends/qt/LaTeXHighlighter.h
index 7a80d1f..5f7108b 100644
--- a/src/frontends/qt/LaTeXHighlighter.h
+++ b/src/frontends/qt/LaTeXHighlighter.h
@@ -27,7 +27,8 @@ class LaTeXHighlighter : public QSyntaxHighlighter
 public:
 	explicit LaTeXHighlighter(QTextDocument * parent,
 				  bool at_letter = false,
-				  bool keyval = false);
+				  bool keyval = false,
+				  bool optsnippet = false);
 
 protected:
 	void highlightBlock(QString const & text) override;
@@ -43,6 +44,8 @@ private:
 	bool const at_letter_;
 	// highlight keyval options?
 	bool const keyval_;
+	// option snippet?
+	bool const optsnippet_;
 };
 
 } // namespace frontend