From bf981ae049e136e76c021123d858386b405d3dd2 Mon Sep 17 00:00:00 2001
From: YuSanka <yusanka@gmail.com>
Date: Tue, 20 Jul 2021 10:18:59 +0200
Subject: [PATCH] Temporary workaround for compatibility with older Slicer: To
 the "physical_printer" added "preset_name" option as a duplicate of the
 "preset_names" but like one string. Note: It will works just for printer
 preset names without ";" (see #5503)

---
 src/libslic3r/Preset.cpp      | 10 ++++++++++
 src/libslic3r/PrintConfig.cpp |  6 ++++++
 2 files changed, 16 insertions(+)

diff --git a/src/libslic3r/Preset.cpp b/src/libslic3r/Preset.cpp
index 97457d63b..c9fef0a40 100644
--- a/src/libslic3r/Preset.cpp
+++ b/src/libslic3r/Preset.cpp
@@ -1418,6 +1418,7 @@ const std::vector<std::string>& PhysicalPrinter::printer_options()
     static std::vector<std::string> s_opts;
     if (s_opts.empty()) {
         s_opts = {
+            "preset_name", // temporary option to compatibility with older Slicer
             "preset_names",
             "printer_technology",
             "host_type",
@@ -1481,6 +1482,15 @@ void PhysicalPrinter::update_preset_names_in_config()
         values.clear();
         for (auto preset : preset_names)
             values.push_back(preset);
+
+        // temporary workaround for compatibility with older Slicer
+        {
+            std::string name;
+            for (auto el : preset_names)
+                name += el + ";";
+            name.pop_back();
+            config.set_key_value("preset_name", new ConfigOptionString(name));
+        }
     }
 }
 
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 3c554012d..3c5ff3859 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -317,6 +317,12 @@ void PrintConfigDef::init_common_params()
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionStrings());
 
+    // temporary workaround for compatibility with older Slicer
+    {
+        def = this->add("preset_name", coString);
+        def->set_default_value(new ConfigOptionString());
+    }
+
     def = this->add("printhost_authorization_type", coEnum);
     def->label = L("Authorization Type");
 //    def->tooltip = L("");