Re: catching parenthesis errors in elisp

[rustom]

On Jun 12, 4:55 pm, Xah Lee <xah...@gmail.com> wrote:
> On Jun 12, 12:05 am, rustom <rustompm...@gmail.com> wrote:
>
> > Im hacking on a 700 line elisp function.
> > While doing some (fairly mechanical) cut-paste operations it looks
> > like either Ive got a parenthesis or a quote (most likely double quote
> > but could also be single quote) error.
>
> > Any suggestions on how to catch such errors?
>
> here's some recommendation based on how i code elisp.
>
> • never type single paren. I always type them in pairs. And never
> delete one of them.
> • use tree navigation to move between code.
> • to delete or move parts of expression, select the whole expression,
> cut & copy to move.
>
> so, when i code in lisp, there is never ever unmatched parenthesis.
>
> this method beats paren-edit mode.
Ive *not* written this lisp.
All did (or tried to do) was take some existing lisp and change it a
bit here and there -- mostly nothing more than changing some strings.
>
> the detail of my editing and setup is here:
>
> • Tips For Editing Lisp Code With Emacs
>  http://xahlee.org/emacs/emacs_editing_lisp.html
>
> to select current unit of sexp, i press one key, which is bound to
> extend-selection, which is defined in my ergoemacs mode. The code is
> shown here:
>
> • A Text Editor Feature: Extend Selection By Semantic Unit
>  http://xahlee.org/emacs/syntax_tree_walk.html
>
>   Xah
> ∑http://xahlee.org/
>
> ☄