html diff in revision view - #139

@younes0 Thanks for this. Unfortunately the library used, icap/html-diff, is licensed under GPL2+ which, as far as I'm aware, is not compatible with the MIT licence used in BookStack :(

@ssddanbrown Ooops sorry for that. I'll push with this lib instead https://github.com/gathercontent/htmldiff

Note that this one will require the php-tidy ext

done!

Hey @younes0,
Thanks again for this feature. Just want to explain why I haven't merged this in yet. It's just the additional php-tidy extension requirement that's stopping me merging at the moment. I didn't want to introduce a breaking update right away so I'm seeing if there's some other things that can be added to BookStack that will require potential breaking direct update compatibility.

Hello @ssddanbrown
As far as I remember, I couldn't find a MIT licenced package that didn't require php-tidy

Yeah, I also had a look around but could not find a better library. Also tried making the diff code myself but failed pretty miserably.

There's going to be some compatibility changes/breakages in the next BookStack release anyway so now is a good time to sneak in the php-tidy requirement. Should be handy to have tidy in other areas of BookStack anyway.

Thanks again for your work on this.