py-point looks like it should use save-excursion

[Georg Brandl]

subject says all -- otherwise point will not be restored in case of errors

[Andreas Roehler (a-roehler)]

Am 11.01.2012 20:30, schrieb Georg Brandl:
> Public bug reported:
>
> subject says all -- otherwise point will not be restored in case of
> errors
>

Hi Georg,

reads reasonable. Do you have a case for this?

Basically no function employed inside should cause an error. If it does,
it's wrongly used, which should be fixed.

Andreas

[Georg Brandl (gbrandl)]

Well, exceptions are called that because they can occur in exceptional cases :)

To turn the question around, is there any argument against using the safe way
using save-excursion?

[Andreas Roehler (a-roehler)]

Am 11.01.2012 21:50, schrieb Georg Brandl:
> Well, exceptions are called that because they can occur in exceptional
> cases :)
>

yes, but it pertains to errors in Python, which should no cause errors
in Lisp.

> To turn the question around, is there any argument against using the safe way
> using save-excursion?
>

The only argument against seems the fact it worked for that many years
without failure.

Experience tells from other cases, abstract reasoning may overlook
something, so I tend not to change unless some compelling argument is
delivered.

Anyway, if you like to change, let's see how it comes out.
Maybe we gain something not mentioned yet?

Andreas