[LyX features/biginset] Memorise whether delims are extracted from MathExtern.

[Thibaut Cuvelier]

commit 93444892c504fdd7b8fdfbc7f2bf67f9b250eb82
Author: Thibaut Cuvelier <tcuvelier at lyx.org>
Date:   Mon Mar 11 01:07:25 2024 +0100

    Memorise whether delims are extracted from MathExtern.
    
    This patch is part of a series that aims at solving https://www.lyx.org/trac/ticket/12891. It should not change any output.
---
 src/mathed/InsetMathDelim.cpp | 12 ++++++++++--
 src/mathed/InsetMathDelim.h   |  6 ++++++
 src/mathed/MathExtern.cpp     |  4 ++--
 3 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/src/mathed/InsetMathDelim.cpp b/src/mathed/InsetMathDelim.cpp
index 486ed97580..78d26fceea 100644
--- a/src/mathed/InsetMathDelim.cpp
+++ b/src/mathed/InsetMathDelim.cpp
@@ -45,13 +45,21 @@ static docstring convertDelimToLatexName(docstring const & name)
 
 InsetMathDelim::InsetMathDelim(Buffer * buf, docstring const & l,
 		docstring const & r)
-	: InsetMathNest(buf, 1), left_(l), right_(r), dw_(0)
+	: InsetMathNest(buf, 1), left_(l), right_(r), dw_(0), is_extracted_(false)
 {}
 
 
 InsetMathDelim::InsetMathDelim(Buffer * buf, docstring const & l, docstring const & r,
 	MathData const & ar)
-	: InsetMathNest(buf, 1), left_(l), right_(r), dw_(0)
+	: InsetMathNest(buf, 1), left_(l), right_(r), dw_(0), is_extracted_(false)
+{
+	cell(0) = ar;
+}
+
+
+InsetMathDelim::InsetMathDelim(Buffer * buf, docstring const & l, docstring const & r,
+                               MathData const & ar, bool const is_extracted)
+		: InsetMathNest(buf, 1), left_(l), right_(r), dw_(0), is_extracted_(is_extracted)
 {
 	cell(0) = ar;
 }
diff --git a/src/mathed/InsetMathDelim.h b/src/mathed/InsetMathDelim.h
index cad8da49de..3d8bd2ce36 100644
--- a/src/mathed/InsetMathDelim.h
+++ b/src/mathed/InsetMathDelim.h
@@ -27,6 +27,9 @@ public:
 	InsetMathDelim(Buffer * buf, docstring const & left, docstring const & right,
 		MathData const &);
 	///
+	InsetMathDelim(Buffer * buf, docstring const & left, docstring const & right,
+	               MathData const &, bool const is_extracted);
+	///
 	InsetMathDelim * asDelimInset() override { return this; }
 	///
 	InsetMathDelim const * asDelimInset() const override { return this; }
@@ -73,6 +76,9 @@ private:
 	Inset * clone() const override;
 	///
 	mutable int dw_;
+	/// Is it extracted by MathExtern routines? They try to extract as much
+	/// semantics from a raw LaTeX formula in terms of LyX insets.
+	bool const is_extracted_;
 };
 
 } // namespace lyx
diff --git a/src/mathed/MathExtern.cpp b/src/mathed/MathExtern.cpp
index 22124cc13d..d101904e83 100644
--- a/src/mathed/MathExtern.cpp
+++ b/src/mathed/MathExtern.cpp
@@ -500,7 +500,7 @@ bool testCloseParen(MathAtom const & at)
 MathAtom replaceParenDelims(const MathData & ar)
 {
 	return MathAtom(new InsetMathDelim(const_cast<Buffer *>(ar.buffer()),
-		from_ascii("("), from_ascii(")"), ar));
+		from_ascii("("), from_ascii(")"), ar, true));
 }
 
 
@@ -519,7 +519,7 @@ bool testCloseBracket(MathAtom const & at)
 MathAtom replaceBracketDelims(const MathData & ar)
 {
 	return MathAtom(new InsetMathDelim(const_cast<Buffer *>(ar.buffer()),
-		from_ascii("["), from_ascii("]"), ar));
+		from_ascii("["), from_ascii("]"), ar, true));
 }