Apple's libc shells out to Perl to implement wordexp

Re:Apple's libc shells out to Perl to implement wordexp by mrpippy on Tuesday February 10, 2015 @02:29AM (#9025838)

The current one is a derivative of NetBSD's implementation (where it shells out to use a sh builtin)

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Re:Apple's libc shells out to Perl to implement wordexp by lloeki on Tuesday February 10, 2015 @03:24AM (#9025956)

License-wise:

- this piece of code is 2BSD-licensed

- it calls out to /bin/sh

- on OS X, /bin/sh is hardlinked to /bin/bash

- OS X's bash is GPLv2

Forking to shell is the only way to reuse bash's code. More often than not I really wish sh were not bash.

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Re:Apple's libc shells out to Perl to implement wordexp by _ZeD_ on Tuesday February 10, 2015 @05:55AM (#9026430)

"Forking to shell is the only way to reuse bash's code."

well, the other obvius way is to license this piece of code as GPLv2.

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Re:Apple's libc shells out to Perl to implement wordexp by yetihehe on Tuesday February 10, 2015 @06:20AM (#9026506)

AFAIK this is THE reason for GPL. So that you either release your code and contribute to open source or suffer from slower access methods.

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Re:Apple's libc shells out to Perl to implement wordexp by feld on Tuesday February 10, 2015 @08:57AM (#9027078)

The BSDs doesn't ship with bash and their wordexp shelling out to /bin/sh doesn't suffer, so I don't see how this is a reason for the GPL.

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Re:Apple's libc shells out to Perl to implement wordexp by yetihehe on Tuesday February 10, 2015 @11:50AM (#9028288)

Probably I've written it not clearly enough: "Reason for GPL not allowing you to use code in your own programs, but allowing use through exec: you either release your code and contribute to open source or suffer from slower access methods."

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Re:Apple's libc shells out to Perl to implement wordexp by feld on Tuesday February 10, 2015 @03:40PM (#9029752)

ahh, ok; that's clearer

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Re:Apple's libc shells out to Perl to implement wordexp by tedunangst on Tuesday February 10, 2015 @07:36AM (#9026735)

Which would require libc to be GPL, something not even glibc does.

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Re:Apple's libc shells out to Perl to implement wordexp by dxq on Tuesday February 10, 2015 @02:34AM (#9025849)

Judging by both the source code and its placement in the repository (gen/FreeBSD/wordexp.c), I'm thinking it's a derivative of the FreeBSD implementation (which may itself be a derivative of the NetBSD implementation, or perhaps the other way around).

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Re:Apple's libc shells out to Perl to implement wordexp by JoachimS on Tuesday February 10, 2015 @04:25AM (#9026132)

Yes, the OSX code seems to come from FreeBSD. Here is the FreeBSD version of the source:

https://github.com/freebsd/freebsd/blob/master/lib/libc/gen/...

It looks very similar to the current OSX file posted in an earlier comment. Calls /bin/sh too.

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