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From: Jean-Christophe Helary <jean.christophe.helary@gmail.com>
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Subject: Re: format use inquiry
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Thank you Yuri. I'm actually back to working on packages.el where there =
are some problematic string concatenations and I thought what you just =
proposed was a more acceptable way to handle such strings. Thank you for =
the confirmation.

Jean-Christophe=20

> On Jun 21, 2017, at 0:02, Yuri Khan <yuri.v.khan@gmail.com> wrote:
>=20
> On Tue, Jun 20, 2017 at 3:48 PM, Jean-Christophe Helary
> <jean.christophe.helary@gmail.com> wrote:
>> I'd like to know if that kind of code is acceptable or not:
>>=20
>> (format "http%s://elpa.gnu.org/packages/"
>>                                        (if (gnutls-available-p) "s" =
""))
>=20
> The standard localization argument against concatenating an "s" onto a
> word does not apply here. But, one day, someone is going to grep for
> occurrences of http:// to see if it=E2=80=99s still used anywhere.
>=20
> That someone could be you.
>=20
> Spell it out.
>=20
>    (defvar =E2=80=A6-elpa-root
>      (if (gnutls-available-p)
>          "https://elpa.gnu.org/packages/"
>        "http://elpa.gnu.org/packages/")
>      "=E2=80=A6some doc=E2=80=A6. http and https schemes are =
supported;
>    https is conditional on GnuTLS.")