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e6d8bfe218
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Brad Fitzpatrick e6d8bfe218 os/exec: fix Command with relative paths 
Command was (and is) documented like:
"If name contains no path separators, Command uses LookPath to
resolve the path to a complete name if possible. Otherwise it
uses name directly."

But that wasn't true. It always did LookPath, and then
set a sticky error that the user couldn't unset.
And then if cmd.Dir was changed, Start would still fail
due to the earlier sticky error being set.

This keeps LookPath in the same place as before (so no user
visible changes in cmd.Path after Command), but only does
it when the documentation says it will happen.

Also, clarify the docs about a relative Dir path.

No change in any existing behavior, except using Command
is now possible with relative paths. Previously it only
worked if you built the *Cmd by hand.

Fixes #7228

LGTM=iant
R=iant
CC=adg, golang-codereviews
https://golang.org/cl/59580044
2014-02-03 16:32:13 -05:00
api api: update next.txt 2014-01-22 10:54:51 -08:00
doc effective_go: move 'Type switch' section into 'Control structures' section. 2014-01-23 16:26:42 -08:00
include liblink: include missing pragmas for plan9 formatter 2014-01-22 06:23:19 +01:00
lib lib/codereview: add LGTM= line to commit messages 2014-01-23 15:10:38 -05:00
misc cmd/ld: fix bug with "runtime/cgo" in external link mode 2014-01-30 09:25:47 -08:00
src os/exec: fix Command with relative paths 2014-02-03 16:32:13 -05:00
test cmd/gc: do not consider length zero arrays as comparable. 2014-01-31 00:30:56 +01:00
.hgignore .hgignore: remove duplicate entry 2013-12-12 19:01:50 -08:00
.hgtags tag go1.2 2013-12-02 09:06:41 +11:00
AUTHORS A+C: Gordon Klaus (individual CLA) 2014-02-03 11:05:51 -08:00
CONTRIBUTORS A+C: Gordon Klaus (individual CLA) 2014-02-03 11:05:51 -08:00
favicon.ico godoc: update favicon 2012-10-11 17:02:36 +11:00
LICENSE doc: update licensing text one more time 2012-03-27 15:09:13 +11:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README README: Fix installation instructions 2013-11-20 13:47:37 -08:00
robots.txt godoc: serve robots.txt raw 2011-02-19 05:46:20 +11:00

README 

This is the source code repository for the Go programming language.  

For documentation about how to install and use Go,
visit http://golang.org/ or load doc/install-source.html
in your web browser.

After installing Go, you can view a nicely formatted
doc/install-source.html by running godoc --http=:6060
and then visiting http://localhost:6060/doc/install/source.

Unless otherwise noted, the Go source files are distributed
under the BSD-style license found in the LICENSE file.

--

Binary Distribution Notes

If you have just untarred a binary Go distribution, you need to set
the environment variable $GOROOT to the full path of the go
directory (the one containing this README).  You can omit the
variable if you unpack it into /usr/local/go, or if you rebuild
from sources by running all.bash (see doc/install.html).
You should also add the Go binary directory $GOROOT/bin
to your shell's path.

For example, if you extracted the tar file into $HOME/go, you might
put the following in your .profile:

    export GOROOT=$HOME/go
    export PATH=$PATH:$GOROOT/bin

See doc/install.html for more details.