Activate extension when a R script file is opened outside of a workspace

[MNRK01]

Is your feature request related to a problem? Please describe.

I often use the vscode-R extension without opening a workspace. Currently, the vscode-R extension is activated when a workspace containing R scripts is opened. The extension does not activate when opening a single R script file outside of a workspace. This means that I have to force the extension to activate so that I can have the autocomplete and popup help features working. I force the extension to activate by opening the R Help feature which I think works due to the onWebviewPanel:rhelp activation event.

Describe the solution you'd like

The following patch to the package.json file activates the extension when an R script file is opened outside of a workspace folder. Having the onLanguage:r line is consistent with other extensions, namely the Python and C/C++ extensions from Microsoft.

--- package.json.orig	2025-07-04 08:48:57.676941500 -0500
+++ package.json	2025-07-04 08:51:26.174039600 -0500
@@ -31,7 +31,8 @@
 	"activationEvents": [
 		"workspaceContains:**/*.{rproj,Rproj,r,R,rd,Rd,rmd,Rmd}",
 		"onCommand:r.runSelectionInActiveTerm",
-		"onWebviewPanel:rhelp"
+		"onWebviewPanel:rhelp",
+		"onLanguage:r"
 	],
 	"main": "./dist/extension",
 	"contributes": {

Describe alternatives you've considered

Force the vscode-R extension to activate by opening the R Help feature in the extension. Not ideal as it involves an extra step. The above patch makes the extension available seamlessly when working outside of vscode workspaces.

Additional context