Fixed #31341 -- Doc'd minimal gettext version with ES6 template strings support.

[claudep]

No description provided.

[cedeber]

Hi. gettext 0.20.x seems still buggy with templates strings. Looks like the 0.21 should fix that. See gettext bug report. Thanks.

[claudep]

Should we mention the future gettext 0.21 now and update the docs when it is released? @felixxm, what wording would you suggest?

[claudep]

Or maybe just wait for the next gettext release before updating the documentation…

[felixxm]

@claudep I'm not sure, we can wait few years for gettext 0.21 🤔 #56678 is a bug in a new feature so they can release 0.20.2 instead of 0.21. IMO the current wording is fine, because gettext added official support for JavaScript template literals in 0.20, bugs in their implementation shouldn't impact our docs. We can adjust it later after the next gettext release.

[cedeber]

In the gettext log 0.21 is from December 2019, but not yet released. No ideas why.

[felixxm]

@cedeber Thanks for sharing this source. In that case I think we can mention unreleased version of gettext, e.g.:

JavaScript template strings need ``gettext`` 0.21+.