Also fixes an incorrect comment about the impact
a CPython operand precedence bug will have on the
way template literals interact with regular strings.
* switch to lazy conversion specifier processing (includes adding `operator.convert_field`)
* added proposal for `!()` as a new conversion specifier that invokes `__call__` (rather than `__repr__` or `__str__`)
* add `render_text` callback to `TemplateLiteral.render` signature (default value: `str`)
* new protocol: `typing.InterpolationTemplate` (protocol corresponding to the concrete `types.TemplateLiteral` type)
* new protocol: `typing.TemplateText` (equivalent to `Decoded` from PEP 750)
* new protocol: `typing.TemplateField` (inspired by `Interpolation` from PEP 750, with adjustments for eager field evaluation)
* new concrete type: `types.TemplateLiteralText` (equivalent to `DecodedConcrete` from PEP 750)
* new concrete type: `types.TemplateLiteralField` (inspired by `InterpolationConcrete` from PEP 750, with adjustments for eager field evaluation)
* added iteration support to `TemplateLiteral`, producing `TemplateLiteralText` and `TemplateLiteralField` instances in their order of appearance (keeping the "no empty TemplateLiteralText entries" rule from PEP 750)
* change the way `TemplateLiteral` works based on the way PEP 750 works
* added or updated discussion notes about several included and deferred features
Closes#3904
* Re-open PEP 501 in consideration of PEP 701
* Switch naming from "interpolation template strings" to "template literal string"
* Add Nick Humrich as co-author
---------
Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>
Co-authored-by: Nick Coghlan <ncoghlan@gmail.com>
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
* For most cases (including all PEP metadata), replace birth name with chosen name
* Birth name has been retained in parentheses when this makes other references
substantially clearer (e.g. references to mailing list posts, elected members
of the inaugural Steering Council)
Alyssa Coghlan
Cornelius Roemer
Nick Humrich
Adam Turner