Remove trailing whitespace after ASC/DESC postfix operators

[sgoll]

The fix is in line with all other occurrences of postfix_operator!(), none of which include trailing whitespace (as opposed to infix_operator!() and prefix_operator!() definitions).

Fixes #4075

[kw217]

LGTM. Other postfix operators have only a leading space, not a trailing one. And generation is tested in all_about_inserts.

[sgoll]

@weiznich What is the procedure concerning the release of purely syntactical changes such as here, in #4116, in #4398, and maybe other PRs? I have noticed that these changes have not been part of a previous releases, nor do they seem to be planned for an upcoming release.

I am aware that these are purely non-functional fixes, but I'd love to have "clean" SQL for log messages etc. Are changes like these considered breaking and need to be postponed until the next major release Diesel 3.x?

[weiznich]

It's mostly that backporting fixes is effort, so I only backport fixes that I see as bug fixes solving an existing problem. I personally do not classify this change as worth being backport as I see this as purely synthetic change.
If you care about this feel free to backport it and open a PR against the branch for #4490.

That all written: The next release will likely be 2.3, not 3.0. Also this change is clearly nothing that requires a major release.

[sgoll]

If you care about this feel free to backport it and open a PR against the branch for #4490.

Thank you for your reply. I have opened pull request weiznich#8 with the backports for #4076, #4116, #4398.

That all written: The next release will likely be 2.3, not 3.0. Also this change is clearly nothing that requires a major release.

👍