[LyX/master] FindAdv: Do not insert space for '\n' if there already are spaces around

[Kornel Benko]

commit 8e256fbf0fb1fdffafe5bb35e18a0746d3ce8d1f
Author: Kornel Benko <kor...@lyx.org>
Date:   Wed May 11 17:42:50 2022 +0200

    FindAdv: Do not insert space for '\n' if there already are spaces around
---
 src/lyxfind.cpp |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/src/lyxfind.cpp b/src/lyxfind.cpp
index 7048fc2..8c609a7 100644
--- a/src/lyxfind.cpp
+++ b/src/lyxfind.cpp
@@ -3962,10 +3962,11 @@ string MatchStringAdv::normalize(docstring const & s, 
bool ignore_format) const
        while ((pos = t.find("\n")) != string::npos) {
                if (pos > 1 && t[pos-1] == '\\' && t[pos-2] == '\\' ) {
                        // Handle '\\\n'
-                       if (isAlnumASCII(t[pos+1])) {
+                       if (isPrintableNonspace(t[pos+1]) && ((pos < 3) || 
isPrintableNonspace(t[pos-3]))) {
                                t.replace(pos-2, 3, " ");
                        }
                        else {
+                               // Already a space there
                                t.replace(pos-2, 3, "");
                        }
                }
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