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| From: | "Michał Górny" <mgorny@g.o> | ||
|---|---|---|---|
| To: | gentoo-dev@l.g.o | ||
| Cc: | vapier@g.o, hasufell@g.o, amd64@g.o, toolchain@g.o | ||
| Subject: | Re: [gentoo-dev] Re: [PATCH multilib.eclass] Distinguish between unset and empty variables when restoring. | ||
| Date: | Sat, 20 Apr 2013 15:45:20 | ||
| Message-Id: | 20130420174242.4ca7eae5@pomiocik.lan | ||
| In Reply to: | [gentoo-dev] Re: [PATCH multilib.eclass] Distinguish between unset and empty variables when restoring. by Mike Frysinger |
||
| 1 | On Sat, 20 Apr 2013 02:10:20 -0400 |
| 2 | Mike Frysinger <vapier@g.o> wrote: |
| 3 | |
| 4 | > On Saturday 20 April 2013 01:12:20 Michał Górny wrote: |
| 5 | > > for v in CHOST CBUILD AS CC CXX LD PKG_CONFIG_{LIBDIR,PATH} ; do |
| 6 | > > vv="__abi_saved_${v}" |
| 7 | > > - export ${v}="${!vv}" |
| 8 | > > + unset ${v} |
| 9 | > > + [[ ${!vv+1} ]] && export ${v}="${!vv}" |
| 10 | > > unset ${vv} |
| 11 | > |
| 12 | > merge the two unset commands. no need to run it twice. |
| 13 | |
| 14 | How would I do this? If I do both before the 'export', I lose |
| 15 | the original value. If I do both after the 'export', I lose the value |
| 16 | I just exported. |
| 17 | |
| 18 | -- |
| 19 | Best regards, |
| 20 | Michał Górny |
| File name | MIME type |
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| signature.asc | application/pgp-signature |
| Subject | Author |
|---|---|
| Re: [gentoo-dev] Re: [PATCH multilib.eclass] Distinguish between unset and empty variables when restoring. | Mike Frysinger <vapier@g.o> |