eshell aliases and extra parameters

eshell aliases and extra parameters

[jonetsu]

Hello,

I have defined an alias for eshell, which is found
in .emacs/eshell/alias :

alias PC17 g++ -Wall -std=c++17 -pthread $1

This works fine to compile files, such as:

PC17 explicit.cc

Although it does not work when an extra compile parameter is added,
such as:

PC17 -DEXPLICIT explicit.cc 
g++: fatal error: no input files

It looks like $1 does not stand for any number of arguments, taking one
and rejecting any others.

At the regular Linux console, the just-about same (w/o the $1) alias
works with extra params:

alias PC17='g++ -Wall -std=c++17 -pthread

% PC17 -DEXPLICIT explicit.cc

Is there a way to add on-the-spot parameters in eshell w/o having to
modify the eshell alias itself ?

Cheers.

Re: eshell aliases and extra parameters

[Colin Baxter]

Dear Jonetsu,
>>>>> jonetsu  <jonetsu@teksavvy.com> writes:

    > Hello, I have defined an alias for eshell, which is found in
    > .emacs/eshell/alias :

    > alias PC17 g++ -Wall -std=c++17 -pthread $1

    > This works fine to compile files, such as:

    > PC17 explicit.cc

    > Although it does not work when an extra compile parameter is
    > added, such as:

    > PC17 -DEXPLICIT explicit.cc g++: fatal error: no input files

    > It looks like $1 does not stand for any number of arguments,
    > taking one and rejecting any others.

    > At the regular Linux console, the just-about same (w/o the $1)
    > alias works with extra params:

    > alias PC17='g++ -Wall -std=c++17 -pthread

    > % PC17 -DEXPLICIT explicit.cc

    > Is there a way to add on-the-spot parameters in eshell w/o having
    > to modify the eshell alias itself ?

Try $* rather than $1, as in

alias PC17 g++ -Wall -std=c++17 -pthread $*

Best wishes,

Colin Baxter.

Re: eshell aliases and extra parameters

[jonetsu]

On Wed, 19 Jun 2019 06:26:09 +0100
Colin Baxter <m43cap@yandex.com> wrote:

Hello,

> Try $* rather than $1, as in
> alias PC17 g++ -Wall -std=c++17 -pthread $*

Thanks.  This works very well.

Cheers.