Entering ? on the post link screen now displays category details

linkulator

@@ -194,6 +194,17 @@ def get_input(item: str) -> str:
         i: str = input("{}: ".format(style_text(item, "underline")))
         if i == "":
             raise ValueError("Empty field")
+        if i == "?":
+            category_text = (
+                "No categories yet, feel free to make a new one!"
+                if not categories
+                else ", ".join(sorted(record["name"] for record in categories))
+            )
+            print(
+                "Available categories: {}\n"
+                "♻️  Please help keep Linkulator tidy".format(category_text)
+            )
+            continue
         if is_valid_input(i):
             return i
         print(
@@ -204,21 +215,15 @@ def get_input(item: str) -> str:
 
 def post_link() -> int:
     """Handles the link posting process"""
-
-    category_text = (
-        "None"
-        if not categories
-        else ", ".join(sorted(record["name"] for record in categories))
+    print("\nPost a link by entering the details below.")
+    print(
+        "Enter {} for a list of categories. Enter an empty field to cancel.\n".format(
+            style_text("?", "underline")
+        )
     )
 
-    print("\nEnter link information here.  Leaving any field blank aborts " "post.\n")
-
     try:
         url = get_input("URL")
-        print(
-            "Available categories: {}\n"
-            "♻️  Please help keep Linkulator tidy".format(category_text)
-        )
         category = get_input("Category")
         title = get_input("Title")
     except ValueError: