Merge branch 'master' of https://github.com/prusa3d/PrusaSlicer

src/libslic3r/Config.cpp

@@ -739,11 +739,11 @@ bool DynamicConfig::read_cli(int argc, char** argv, t_config_option_keys* extra,
         ConfigOption            *opt_base   = this->option(opt_key, true);
         ConfigOptionVectorBase  *opt_vector = opt_base->is_vector() ? static_cast<ConfigOptionVectorBase*>(opt_base) : nullptr;
         if (opt_vector) {
-            // Vector values will be chained. Repeated use of a parameter will append the parameter or parameters
-            // to the end of the value.
 			if (! existing)
 				// remove the default values
-				opt_vector->deserialize("", true);
+				opt_vector->clear();
+            // Vector values will be chained. Repeated use of a parameter will append the parameter or parameters
+            // to the end of the value.
             if (opt_base->type() == coBools)
                 static_cast<ConfigOptionBools*>(opt_base)->values.push_back(!no);
             else

src/libslic3r/Config.hpp

@@ -167,8 +167,10 @@ public:
     // Set a single vector item from either a scalar option or the first value of a vector option.vector of ConfigOptions. 
     // This function is useful to split values from multiple extrder / filament settings into separate configurations.
     virtual void set_at(const ConfigOption *rhs, size_t i, size_t j) = 0;
-
+    // Resize the vector of values, copy the newly added values from opt_default if provided.
     virtual void resize(size_t n, const ConfigOption *opt_default = nullptr) = 0;
+    // Clear the values vector.
+    virtual void clear() = 0;
 
     // Get size of this vector.
     virtual size_t size()  const = 0;
@@ -277,6 +279,8 @@ public:
         }
     }
 
+    // Clear the values vector.
+    void   clear() override { this->values.clear(); }
     size_t size()  const override { return this->values.size(); }
     bool   empty() const override { return this->values.empty(); }