Custom Command: Launch .lnk files using Proton automatiically

steamtinkerlaunch

@@ -7,7 +7,7 @@
 PREFIX="/usr"
 PROGNAME="SteamTinkerLaunch"
 NICEPROGNAME="Steam Tinker Launch"
-PROGVERS="v14.0.20240512-2"
+PROGVERS="v14.0.20240516-1 (customcmd-lnk-files)"
 PROGCMD="${0##*/}"
 PROGINTERNALPROTNAME="Proton-stl"
 SHOSTL="stl"
@@ -12737,8 +12737,9 @@ function launchCustomProg {
 			writelog "INFO" "${FUNCNAME[0]} - Generated arguments for custom command are now '${FINALOUTCMD[*]}'"
 		fi
 
+		# Use Wine/Proton with a custom command if it is detected as a Windows executable, a batch script (.bat), a Windows shortcut (.lnk), or if the user forces Proton
 		# Cannot always rely on `file` to return `PE32` even for Windows executables -- See #710 (seems to be when exe files are built on Linux they are not PE32)
-		if [ "$(file "$CUSTCOM" | grep -c "PE32")" -eq 1 ] || grep -q ".bat" <<< "$CUSTCOM" || [ "$CUSTOMCMDFORCEWIN" -eq 1 ]; then
+		if [ "$(file "$CUSTCOM" | grep -c "PE32")" -eq 1 ] || grep -q ".bat" <<< "$CUSTCOM" || grep -q ".lnk" <<< "$CUSTCOM" || [ "$CUSTOMCMDFORCEWIN" -eq 1 ]; then
 			if [ "$CUSTOMCMDFORCEWIN" -eq 1 ]; then
 				# Force custom command to use Wine/Proton, even if we do not detect it as a valid Windows binary
 				writelog "INFO" "${FUNCNAME[0]} - CUSTOMCMDFORCEWIN is '$CUSTOMCMDFORCEWIN' - User wants to force this custom command as a Windows program"