[Toybox] [PATCH] env: fix case where a variable is replaced.

[enh]

Thanks, it's there now. I'll see how that goes...

*From:*Rob Landley <rob at landley.net>
*Date:*Fri, May 3, 2019, 13:29
*To:*enh, toybox

Forgot to push, sorry.
>
> Rob
>
> On 5/3/19 2:47 PM, enh via Toybox wrote:
> > ping?
> >
> > On Thu, May 2, 2019 at 6:47 PM enh <enh at google.com> wrote:
> >>
> >> Found when trying to update the toybox prebuilt used for the Android
> >> build.
> >>
> >> Also add the corresponding test.
> >> ---
> >>  lib/env.c      | 4 +---
> >>  tests/env.test | 2 ++
> >>  2 files changed, 3 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/lib/env.c b/lib/env.c
> >> index 35ef688c..bc23b753 100644
> >> --- a/lib/env.c
> >> +++ b/lib/env.c
> >> @@ -58,11 +58,9 @@ void xsetenv(char *name, char *val)
> >>      if (!memcmp(name, environ[i], len) && environ[i][len]=='=') {
> >>        if (i>=envc) free(environ[i]);
> >>        else {
> >> -        char **delete = environ+i;
> >> -
> >>          // move old entries down, add at end of old data
> >>          toys.envc = envc--;
> >> -        for (i=0; new ? i<envc : !!delete[i]; i++) delete[i] =
> delete[i+1];
> >> +        for (; new ? i<envc : !!environ[i]; i++) environ[i] =
> environ[i+1];
> >>          i = envc;
> >>        }
> >>        break;
> >> diff --git a/tests/env.test b/tests/env.test
> >> index 3098731d..4df118dd 100755
> >> --- a/tests/env.test
> >> +++ b/tests/env.test
> >> @@ -19,3 +19,5 @@ unset WALRUS BANANA LETTERS FILTER
> >>
> >>  testcmd "early fail" '--oops 2> /dev/null ; echo $?' "125\n" "" ""
> >>  testcmd "why is this allowed" "=BLAH env | grep '^=BLAH\$'" "=BLAH\n"
> "" ""
> >> +
> >> +testcmd "replace" "A=foo PATH= `which printenv` A" "foo\n" "" ""
> >> --
> >> 2.21.0.1020.gf2820cf01a-goog
> > _______________________________________________
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> > Toybox at lists.landley.net
> > http://lists.landley.net/listinfo.cgi/toybox-landley.net
> > .
> >
>
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