New submission from Arno-Can Uestuensoez <[email protected]>:
Even though this involves 'setuptools', I write this issue here because of the
tight coupling of 'distutils' and 'setuptools' e.g. by the passed 'self'
parameter.
The aliases as represented by the command 'setup.py alias' are internally
treated by 'setuptools' as options.
See code:
setuptools.dist._parse_config_files()
in Python-3.8.0: line 604 - line 608
The consequence is the processing of the standard replacement of hyphens by
underscores for alias names.
The resulting behaviour is here three folded.
1. The technical behaviour of the alias replacement for valid
aliases id flawless.
2. The technical behaviour of the display representation for alias
names containing a hyphen is erroneous.
For example:
python setup.py alias my-alias alias
Results flawless in:
[aliases]
my-alias = alias
The display:
python setup.py alias
is erroneous:
(3.8.0)$ python setup.py alias
running alias
Command Aliases
---------------
setup.py alias my_alias alias
because the modified internal values are displayed - with replaced
hyphens in alias names.
3. The call of the alias as command replacement is erroneous in general:
3.0. the original call is flawless:
(3.8.0)$ python setup.py alias
running alias
Command Aliases
---------------
setup.py alias my_alias alias
3.1. the call by defined literal alias is erroneous:
(3.8.0)$ python setup.py my-alias
invalid command name 'my-alias'
3.2. the call by modified alias is also erroneous,
as though the alias is not detected, resulting here in the
display of an empty list:
(3.8.0)$ python setup.py my_alias
running alias
Command Aliases
---------------
Another example to mention here is the acceptance of alias names including
spaces, which prbably should be suppressed, because as far as I can see command
name could not contain spaces at all.
E.g. the alias 'ls -l' is handeled erroneous in accordance to the previous
remarks, but is basically not valid at all.
(3.8.0)$ python setup.py 'ls -l' alias
Results in the flawless configuration entry:
[aliases]
ls -l = alias
The erroneous display:
(3.8.0)$ python setup.py alias
running alias
Command Aliases
---------------
setup.py alias ls _l alias
The behaviour should be fixed to be consistent to allow valid names and reject
others. The accepted names should be fully functional, and displayed and made
available for custom representation literally as provided by the user. A simple
reverse-replacement is here not reliable.
The alternative of the caching of the original input is currently not possible
for a simple public command API due to the lack of fully customization of the
'distclass' see issue Issue38711. Thus this seems currently to require a
complete second scan including eventually selected user files as eventually
selected by the provided call parameters.
----------
components: Distutils
messages: 356094
nosy: acue, dstufft, eric.araujo
priority: normal
severity: normal
status: open
title: setup command alias erroneous for names with hyphens
versions: Python 2.7, Python 3.5, Python 3.6, Python 3.7, Python 3.8
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Python tracker <[email protected]>
<https://bugs.python.org/issue38714>
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