Re: regex capturing the left-hand side of =

[Alex fxmbsw7 Ratchev]

to me, like greycat in the beginning said, no idea what ure trying and what
not, in your comprehensive text salad

On Sun, Jul 11, 2021, 22:26 Peng Yu <pengyu.ut@gmail.com> wrote:

> I don't parse bash code to see the left-hand is valid or not without
> eval the bash code.
>
> On 7/10/21, Eli Schwartz <eschwartz@archlinux.org> wrote:
> > On 7/10/21 8:07 AM, Peng Yu wrote:
> >> Hi,
> >>
> >> I want to capture the left-hand side of =.
> >
> >
> > I don't understand this? You already know the left hand side because you
> > know what you wrote, the assignment operator doesn't let you do
> expansions.
> >
> >
> >> Since bash variables can be at the left-hand side of =, it is easy to
> >> be captured this case by a regex like ^[A-Za-z_][A-Za-z0-9_]$.
> >
> >
> > I don't understand this? Bash variables can be on the right hand side,
> > not the left hand side. Valid names for a bash variable can be on the
> > left hand side... names, not actually variables.
> >
> > You can't do
> >
> > $var=foo
> >
> >
> >> But it is not easy to capture assignments to elements in arrays or
> >> associative arrays due to the complexity in the suffixes in between
> >> [].
> >
> >
> > What is so complex about it? You have a bash parser at /bin/bash which
> > can evaluate that complexity for you (at the time you run the script, no
> > less).
> >
> >
> >> Is there a regex that can capture and only capture all bash code
> >> snippets for the left-hand side of the assignment operator =?
> >
> >
> > So now there is supposed to be "bash code snippets" on the LHS of an
> > assignment operator??? How???
> >
> > What are you trying to do? (I know, I know, anyone asking "what are you
> > trying to do" and expecting Peng Yu to answer is the most foolish fool
> > in the world. But I'm going to ask anyway, in order to establish
> > precedent in the discussion thread that "this question needs to be
> > answered and naive readers shouldn't get the erroneous impression this
> > thread is a good example to follow".)
> >
> > Why are you even trying to "capture" anything here? Clearly this can't
> > be done inside of the script itself. Are you building a bash parser in
> > another language?
> >
> >
> > --
> > Eli Schwartz
> > Arch Linux Bug Wrangler and Trusted User
> >
> >
>
>
> --
> Regards,
> Peng
>
>