Tooltip fixes

Prevent outputting malformed tooltips when executable arch or version is undefined

Author: ElianHugh

src/executables/executable.ts

@@ -39,7 +39,9 @@ export class RExecutable {
     }
 
     public get tooltip(): string {
-        return `R ${this.rVersion} ${this.rArch}`;
+        const versionString = this.rVersion ? ` ${this.rVersion}` : '';
+        const archString = this.rArch ? ` ${this.rArch}` : '';
+        return `R${versionString}${archString}`;
     }
 }
 
@@ -54,7 +56,7 @@ export class VirtualRExecutable extends RExecutable {
     }
 
     public get tooltip(): string {
-        return `${this.name} (R ${this.rVersion} ${this.rArch})`;
+        return `${this.name} (${super.tooltip})`;
     }
 
     // todo, hardcoded

src/executables/ui/status.ts

@@ -34,7 +34,8 @@ export class ExecutableStatusItem implements vscode.Disposable  {
             this.languageStatusItem.severity = vscode.LanguageStatusSeverity.Information;
             this.languageStatusItem.detail = execState.rBin;
             if (execState instanceof VirtualRExecutable) {
-                this.languageStatusItem.text = `${execState.name} (${execState.rVersion})`;
+                const versionString = execState.rVersion ? ` (${execState.rVersion})` : '';
+                this.languageStatusItem.text = `${execState.name}${versionString}`;
             } else {
                 this.languageStatusItem.text = execState.rVersion;
             }