Using correct typing for param_hint (#2990)

Author: Rowlando13

CHANGES.rst

@@ -8,12 +8,14 @@ Unreleased
 -   Fix reconciliation of `default`, `flag_value` and `type` parameters for
     flag options, as well as parsing and normalization of environment variables.
     :issue:`2952` :pr:`2956`
+-   Fix typing issue in ``BadParameter`` and ``MissingParameter`` exceptions for the
+    parameter ``param_hint`` that did not allow for a sequence of string where the
+    underlying functino ``_join_param_hints`` allows for it. :issue:`2777` :pr:`2990`
 -   Use the value of ``Enum`` choices to render their default value in help
     screen. Refs :issue:`2911` :pr:`3004`
 -   Fix completion for the Z shell (``zsh``) for completion items containing
     colons. :issue:`2703` :pr:`2846`
 
-
 Version 8.2.1
 -------------
 

src/click/exceptions.py

@@ -115,7 +115,7 @@ def __init__(
         message: str,
         ctx: Context | None = None,
         param: Parameter | None = None,
-        param_hint: str | None = None,
+        param_hint: cabc.Sequence[str] | str | None = None,
     ) -> None:
         super().__init__(message, ctx)
         self.param = param
@@ -151,15 +151,15 @@ def __init__(
         message: str | None = None,
         ctx: Context | None = None,
         param: Parameter | None = None,
-        param_hint: str | None = None,
+        param_hint: cabc.Sequence[str] | str | None = None,
         param_type: str | None = None,
     ) -> None:
         super().__init__(message or "", ctx, param, param_hint)
         self.param_type = param_type
 
     def format_message(self) -> str:
         if self.param_hint is not None:
-            param_hint: str | None = self.param_hint
+            param_hint: cabc.Sequence[str] | str | None = self.param_hint
         elif self.param is not None:
             param_hint = self.param.get_error_hint(self.ctx)  # type: ignore
         else: