[New-bugs-announce] [issue30015] Windows also treats full-width spaces as a delimiter when parsing arguments

[林建佑]

New submission from 林建佑:

Windows also treats full-width spaces as a delimiter when parsing command line arguments.

Therefore, subprocess.run() and subprocess.Popen() also need to quote the arg in the sequence of arguments if there is any full-width spaces in it.

Example:

>> subprocess.run(['foo', 'half-width space', 'full-width　space'])

should be executed as 
>> foo "half-width space" "full-width　space"
Windows will treat it as 3 arguments

but now it is incorrectly executed as 
>> foo "half-width space" full-width　space
Windows will treat it as 4 arguments

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components: Library (Lib), Windows
messages: 291262
nosy: paul.moore, steve.dower, tim.golden, zach.ware, 林建佑
priority: normal
severity: normal
status: open
title: Windows also treats full-width spaces as a delimiter when parsing arguments
type: behavior
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30015>
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