add option to use width as percentage

[booperlv]

adds option to use nvim_tree_width as a percentage (reads the width as a percentage and converts to decimal, multiply to vim total columns)

[kyazdani42]

thanks for the feature, a few formatting issues to fix before merging :)

[kyazdani42]

oh yes and please add documentation for the option

[booperlv]

Sorry for the odd code, whipped this up as a quick fix while on a break from other projects.
Will clean up in a few, Thanks!

[booperlv]

One more question by the way, Where do you think it would be best to place the option in the documentation? Would right under g:nvim_tree_width be better or is it good as is right now?

[sindrets]

Some thoughts: do we really need another option for this? Seems really unnecessary. Can we not just make it so that nvim_tree_width also accepts a string, and then we can determine whether or not it's a percentage depending on the value.

let g:nvim_tree_width = 30 " indicates width of 30 columns.
let g:nvim_tree_width = '30%' " indicates width of 30% of '&columns'.

[gegoune]

That is very reasonable.

[kyazdani42]

agreed with sindrets proposal, looks better this way :)

[booperlv]

alright, going to start working on it :)

[booperlv]

Opened a new pull request ( #473 ) with the suggested changes, both because I think it's different, and because I messed up resetting the fork's master branch and ended up deleting the fork. The more I learn about git and not messing around with it at 2AM. Closing this one now :D