Emacs 27 officially deprecates cl.el, which causes run-tests.sh to
fail even when all tests pass, due to byte-compiler warnings.
* dash.el: Do not unconditionally require cl.el in all Emacs
versions. Remove gv setter for -first-item, which is redundant
since -first-item is an alias of car. Also wrap calls to
gv-define-setter in with-no-warnings to suppress warnings about
gv--defsetter being undefined at runtime in certain Emacs versions.
(-third-item): Do not assume caddr is defined just because cl.el was
loaded within eval-when-compile: caddr is only defined if cl.el is
loaded at runtime, or in Emacs 26 and above.
* dev/examples.el (odd?): New helper function akin to even?.
(-partition-after-pred, -partition-before-pred): Use it instead of
assuming oddp from cl.el is defined.
* run-tests.sh: Byte-compile all Emacs versions. Pass -Q along with
-batch for some older Emacs versions. Consistently use
short (single-hyphen) Emacs options.
* README.md:
* dash.info:
* dash.texi: Regenerate docs.
With a symbol, only the file providing the feature triggers the
eval-after-load. With a string, any file named the same way triggers
it. This is problematic for custom configurations named after
packages.
This adds `-each-indexed` and an anaphoric variant `--each-indexed`,
equivalent to `-map-indexed`.
Whilst `--each` already defines `it-index`, it's not documented. Having
a separate version is more explicit and more discoverable because it's
similarly named to `-map-indexed`.
Fixes#175.