request: syntax for centering text

[uvtc]

Now that Pandoc supports line blocks, here's some syntax that might work nicely for left/center/right -justifying lines:

Hi.

| left-justified
| preserves leading space
| last line

|< also left-justified
|< does not preserve leading space
|< last line

|> right-justified
|> another line
|> last line

|<> centered
|<> another line
|<> last line

Bye.

Thoughts?

[Cheetoacidosis]

God, this has been open for over a decade. ffs, add centering already!!

[raffaem]

I have found this series of filter in the official page for new pandoc filters: https://github.com/pandoc-ext/fonts-and-alignment

It defined various classes for fonts and alignments, including centering