added helper for, e.g., "check 50"

Author: dmalan

opt/cs50/lib/help50/bash

@@ -36,6 +36,12 @@ if [[ "$output" =~ $regex ]]; then
         exit
     fi
 
+    # If CS50 command
+    if [[ "${BASH_REMATCH[1]}" =~ ^(check|style|submit)$ && "$2" == "50" ]]; then
+        echo "Did you mean to run \`${BASH_REMATCH[1]}50\`, without a space, instead?"
+        exit
+    fi
+
     # If backslash instead of forward slash
     if [[ "${BASH_REMATCH[1]}" =~ ^\.(.*) ]]; then
         if [[ -f "./${BASH_REMATCH[1]}" ]]; then