Add separator argument to read-deps. Fixes #53.

CHANGES.rst

@@ -1,3 +1,13 @@
+v8.6.0
+======
+
+#53: ``read-deps`` script now accepts a ``--separator`` argument
+accepting arbitrary separators or any of the named separators:
+
+ - newline
+ - space
+ - null
+
 v8.5.1
 ======
 

pip_run/read-deps.py

@@ -8,13 +8,24 @@
 from .scripts import DepsReader
 
 
+def separator(input):
+    lookup = dict(space=' ', newline='\n', null='\0')
+    return lookup.get(input, input)
+
+
 @autocommand.autocommand(__name__)
-def run(script: path.ExtantFile):
+def run(
+    script: path.ExtantFile,
+    separator: separator = ' ',  # type: ignore
+):
     """
     >>> run(['examples/test-mongodb-covered-query.py'])
     pytest jaraco.mongodb>=3.10
     >>> run(['does-not-exist'])
     Traceback (most recent call last):
     FileNotFoundError: does-not-exist does not exist as a file.
+    >>> run(['examples/test-mongodb-covered-query.py', '--separator', 'newline'])
+    pytest
+    jaraco.mongodb>=3.10
     """
-    print(' '.join(DepsReader.try_read(script).params()))
+    print(separator.join(DepsReader.try_read(script).params()))  # type: ignore