Ping :) ---------- Forwarded message ---------- From: Tadeus Prastowo <tadeus.prast...@unitn.it> Date: Wed, Jan 24, 2018 at 7:52 PM Subject: Re: coproc FDs (file descriptors) available to subshells To: chet.ra...@case.edu Cc: bug-bash@gnu.org
On Wed, Jan 24, 2018 at 7:32 PM, Tadeus Prastowo
<tadeus.prast...@unitn.it> wrote:
> On Wed, Jan 24, 2018 at 5:51 PM, Tadeus Prastowo
> <tadeus.prast...@unitn.it> wrote:
>> On Wed, Jan 24, 2018 at 3:55 PM, Tadeus Prastowo
>> <tadeus.prast...@unitn.it> wrote:
[...]
>>> Okay, I will propose a patch.
>>
>> diff --git a/doc/bashref.texi b/doc/bashref.texi
>> index c0f4a2f..fee8f0e 100644
>> --- a/doc/bashref.texi
>> +++ b/doc/bashref.texi
>> @@ -1197,7 +1197,10 @@ This pipe is established before any
>> redirections specified by the
>> command (@pxref{Redirections}).
>> The file descriptors can be utilized as arguments to shell commands
>> and redirections using standard word expansions.
>> -The file descriptors are not available in subshells.
>> +The file descriptors are not available in subshells other than those
>> +created by command and process substitutions (see the descriptions
>> +the substitutions in @ref{Command Substitution} and
>> +@ref{Process Substitution}, respectively).
>>
>> The process ID of the shell spawned to execute the coprocess is
>> available as the value of the variable @env{NAME}_PID.
>> @@ -3025,6 +3028,12 @@ shell's parent, and traps ignored by the shell
>> are ignored
>> A command invoked in this separate environment cannot affect the
>> shell's execution environment.
>>
>> +Command substitution and process substitution are invoked in a
>> +separate execution environment that starts as an exact duplicate of
>> +the execution environment of the shell. As before, any command within
>> +the separate execution environment cannot affect the shell's execution
>> +environment.
>> +
>> Command substitution, commands grouped with parentheses,
>> and asynchronous commands are invoked in a
>> subshell environment that is a duplicate of the shell environment,
>
> I think the patch misses some information. Please find attached the
> new patch that I propose. What do you think?
Sorry, the patch still misses some information as per
https://lists.gnu.org/archive/html/bug-bash/2011-04/msg00056.html. I
attach the updated patch. What do you think?
Thank you.
--
Best regards,
Tadeus
patch
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