🐛 Make kebab options fall back for snake_case

The previous release didn't take into account the action defaults so
the promised fallbacks for the old input names didn't work. This patch
corrects that mistake.

action.yml

@@ -23,7 +23,7 @@ inputs:
  packages-dir: # Canonical alias for `packages_dir`
  description: The target directory for distribution
  required: false
- default: dist
+ # default: dist # TODO: uncomment once alias removed
  packages_dir: # DEPRECATED ALIAS; TODO: Remove in v3+
  description: >-
  [DEPRECATED]
@@ -36,7 +36,7 @@ inputs:
  verify-metadata: # Canonical alias for `verify_metadata`
  description: Check metadata before uploading
  required: false
- default: 'true'
+ # default: 'true' # TODO: uncomment once alias removed
  verify_metadata: # DEPRECATED ALIAS; TODO: Remove in v3+
  description: >-
  [DEPRECATED]
@@ -51,7 +51,7 @@ inputs:
  Do not fail if a Python package distribution
  exists in the target package index
  required: false
- default: 'false'
+ # default: 'false' # TODO: uncomment once alias removed
  skip_existing: # DEPRECATED ALIAS; TODO: Remove in v3+
  description: >-
  [DEPRECATED]
@@ -69,7 +69,7 @@ inputs:
  print-hash: # Canonical alias for `print_hash`
  description: Show hash values of files to be uploaded
  required: false
- default: 'false'
+ # default: 'false' # TODO: uncomment once alias removed
  print_hash: # DEPRECATED ALIAS; TODO: Remove in v3+
  description: >-
  [DEPRECATED]

twine-upload.sh

@@ -25,7 +25,10 @@ function get-normalized-input() {
 from os import getenv
 from sys import argv
 envvar_name = f"INPUT_{argv[1].upper()}"
-print(getenv(envvar_name, getenv(envvar_name.replace("-", "_"), "")), end="")
+print(
+ getenv(envvar_name) or getenv(envvar_name.replace("-", "_")) or "",
+ end="",
+)
  ' \
  "${var_name}"
 }