[LyX/master] tex2lyx: put adjacent comment lines in one ERT inset (#4797)

[Juergen Spitzmueller]

commit 7868929aacde4d9d015a7430a676276f9cbd1b2d
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Wed Dec 28 09:40:22 2022 +0100

    tex2lyx: put adjacent comment lines in one ERT inset (#4797)
---
 src/tex2lyx/text.cpp |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/tex2lyx/text.cpp b/src/tex2lyx/text.cpp
index 6e58fba..4648983 100644
--- a/src/tex2lyx/text.cpp
+++ b/src/tex2lyx/text.cpp
@@ -2701,9 +2701,14 @@ void parse_comment(Parser & p, ostream & os, Token const & t, Context & context,
 		   bool skipNewlines = false)
 {
 	LASSERT(t.cat() == catComment, return);
-	if (!t.cs().empty()) {
+	string comment = t.cs();
+	// Join multiple consecutive comment lines into one ERT inset
+	while (p.next_token().cat() == catComment)
+		comment += "\n%" + p.get_token().cs();
+
+	if (!comment.empty()) {
 		context.check_layout(os);
-		output_comment(p, os, t.cs(), context);
+		output_comment(p, os, comment, context);
 		if (p.next_token().cat() == catNewline) {
 			// A newline after a comment line starts a new
 			// paragraph