Re: shebang line, gives syntax error

["Ruud H.G. van Tol" <rvtol@isolution.nl>]

On 2021-12-25 19:53, Bill Allombert wrote:
> On Sat, Dec 25, 2021 at 05:54:40PM +0100, Ruud H.G. van Tol wrote:

> > I have put a shebang-line
> > in the very first line of
> > a .gp file, like:
> >
> > #!/usr/local/bin/gp
> >
> > When I let that file run itself,
> > it mentions:
> >
> > parisize = 8000000, primelimit = 500000, nbthreads = 8
> >    ***   syntax error, unexpected '/': #!/usr/local/bin/gp
> >    ***                                   ^-----------------
> > ... skipping file '<redacted>.gp'
> >
> > How to make gp ignore that shebang-line?
>
> Sorry, I do not know anyway to do that, and the shebang-line allows for
> a single option anyway
>
> One way is
>
> # /bin/sh
> gp -f -q -D output=0 << 'EOF'
> ...
> ...
> ...
> EOF
>
> THe only way I see to fix that would be to hande
> #!/ as the start of the line as a comment.

Also at the start of the very first line,
with no leading whitespace.

The regex could then be: /\A#!.*/
(if found at start of buffer, to treat as comment)

The "trick" I used for the workaround:
/\A#![a-z]+/, is not a syntax error,
so that can (probably very theoretically)
cause backward-compatibility-issues.

-- Ruud