Prevent a crash when signature parameters are incorrect.

"About ecode" close with escape (SpartanJ/ecode#873).

bin/assets/plugins/aiassistant.json

@@ -474,10 +474,6 @@
           "name": "nvidia/nemotron-3-super-120b-a12b:free",
           "display_name": "NVIDIA: Nemotron 3 Super (free)"
         },
-        {
-          "name": "qwen/qwen3.6-plus:free",
-          "display_name": "Qwen: Qwen3.6 Plus (free)"
-        },
         {
           "name": "minimax/minimax-m2.5:free",
           "display_name": "MiniMax: MiniMax M2.5 (free)"

include/eepp/ui/doc/textdocument.hpp

@@ -620,6 +620,9 @@ class EE_API TextDocument {
 
 	TextRange addSelections( TextRanges&& selections );
 
+	/* @return returns the selection index otherwise -1 */
+	int selectionIndex( TextRange selection ) const;
+
 	void popSelection();
 
 	bool deleteSelection( const size_t& cursorIdx );

src/eepp/ui/doc/textdocument.cpp

@@ -1288,6 +1288,15 @@ TextRange TextDocument::addSelection( TextRange selection ) {
 	return selection;
 }
 
+int TextDocument::selectionIndex( TextRange selection ) const {
+	if ( mSelection.exists( selection ) )
+		return mSelection.findIndex( selection );
+	selection = sanitizeRange( selection );
+	if ( mSelection.exists( selection ) )
+		return mSelection.findIndex( selection );
+	return -1;
+}
+
 void TextDocument::popSelection() {
 	mSelection.pop_back();
 	if ( mLastSelection >= mSelection.size() )

src/tools/ecode/plugins/autocomplete/autocompleteplugin.cpp

@@ -857,18 +857,24 @@ AutoCompletePlugin::processSignatureHelp( const LSPSignatureHelp& signatureHelp
 		doc.textInput( initialLabel );
 		std::vector<String> parameters;
 		parameters.reserve( sig.parameters.size() );
+		int skippedSelections = 0;
 
 		for ( size_t i = 0; i < sig.parameters.size(); i++ ) {
 			auto start = String::utf8ToCodepointPosition( sig.label, sig.parameters[i].start );
 			auto end = String::utf8ToCodepointPosition( sig.label, sig.parameters[i].end );
 			auto sel = TextRange::convertToLineColumn( initialLabel.view(), start, end );
+			size_t index = i - skippedSelections;
 
-			if ( i == 0 )
+			if ( i == 0 ) {
 				doc.setSelection( i, sel );
-			else
-				doc.addSelection( sel );
+			} else {
+				if ( !doc.addSelection( sel ).isValid() ) {
+					skippedSelections++;
+					continue;
+				}
+			}
 
-			parameters.emplace_back( doc.getSelectedText( i ) );
+			parameters.emplace_back( doc.getSelectedText( index ) );
 		}
 
 		auto selections( doc.getSelections() );

src/tools/ecode/settingsactions.cpp

@@ -131,6 +131,7 @@ void SettingsActions::aboutEcode() {
 	image->setSize( { 128, 128 } );
 	image->toBack();
 	msgBox->setTitle( i18n( "about_ecode", "About ecode..." ) );
+	msgBox->setCloseShortcut( { KEY_ESCAPE, 0 } );
 	msgBox->showWhenReady();
 }