I didn't meant to bring back backticks, but to use the semantics they have in
shell languages of using backslashes to escape nested substitutions, like this:
f"string {code f\"string2 \{code2\} string2\" code} string"
Upon reflection though, I agree that since we already use brackets which lend
themselves to nesting, it probably does make more sense to use them for nesting.
On 20/09/2021 21:25, Guido van Rossum wrote:
> On Mon, Sep 20, 2021 at 1:07 PM Patrick Reader <_...@pxeger.com
> <http://pxeger.com>> wrote:
>
> > The current restrictions will also confuse some users (e.g. those used
> to bash, and IIRC JS, where the rules are similar as what Pablo is proposing).
> > --
> > --Guido van Rossum (python.org/~guido <http://python.org/~guido>
> <http://python.org/~guido>)
>
> WRT the similar syntax in bash (and similar shells), there are two
> options:
>
> "string `code` string"
>
> "string $(code) string"
>
> The latter, $(), allows fully-featured nesting in the way Pablo is
> suggesting:
>
> "string $(code "string2 $(code2) string2" code) string"
>
> The former, using backticks, does not allow nesting directly, but it
> allows extra backslashes inside the backticks to escape the nested ones, like
> this:
>
> "string `code "string2 \`code2\` string2" code` string"
>
> This can be nested infinitely using lots of backslashes. Is this worth
> considering as another option? It doesn't have the disadvantage of
> complicating lexing (as much), although nesting with backslashes is quite
> ugly. IMO nesting things in f-strings would be ugly anyway, so I don't think
> that would matter too much.
>
>
> F-strings are more like $(...), since the interpolation syntax uses {...}
> delimiters. So it probably should work that way. JS interpolation works that
> way too, see
> https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals#nesting_templates
> .
>
> I wouldn't want to do anything to bring `backticks` back in the language.
>
> --
> --Guido van Rossum (python.org/~guido <http://python.org/~guido>)
> /Pronouns: he/him //(why is my pronoun here?)/
> <http://feministing.com/2015/02/03/how-using-they-as-a-singular-pronoun-can-change-the-world/>
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