Proposed changes to method comment_block() in PO.php

[ldebrouwer-rmn]

The method comment_block is called statically throughout PO.php however it's not available as such. I propose changing this to a static.

Apart from this, this method calls constant PO_MAX_LINE_LEN on a global scope but it isn't available in this scope. Therefor I propose calling it like this self::PO_MAX_LINE_LEN.

[LeoColomb]

Good catches! Thanks you a lot for reporting this.

You seem to use PO classes in a thorough way. Are you interested to propose / write some tests?

[ldebrouwer-rmn]

No worries buddy!

I'm going to have to write some unit tests for the stuff that uses this library anyway. So, after I'm done with my integration I'll take out some time to contribute some unit tests.

[LeoColomb]

Thanks! Really appreciated! 🚀