Re: [nmh-workers] Unnecessary dependency on vi???

[Paul Vixie]

Andy Bradford wrote:
> Thus said Ralph Corderoy on Tue, 20 Mar 2018 12:56:09 -0000:
>
> > For evermore, programs that only offer one means of invoking an editor
> > have had to checking first $VISUAL, falling back to $EDITOR.  :-)
>
> You mean like the following chunk of code: :-)
>
> http://www.fossil-scm.org/index.html/artifact?udc=1&ln=1180-1186+1196-1204&name=8d7c320c6bbe086b

here's how crontab(1) does it:

>                         /* what editor to use if no EDITOR or VISUAL
>                          * environment variable specified.
>                          */
> #if defined(_PATH_VI)
> # define EDITOR _PATH_VI
> #else
> # define EDITOR "/usr/ucb/vi"
> #endif
>
> ...
>
>         if (((editor = getenv("VISUAL")) == NULL || *editor == '\0') &&
>             ((editor = getenv("EDITOR")) == NULL || *editor == '\0')) {
>                 editor = EDITOR;
>         }



--
P Vixie