`toc` adds extra newlines each time it is run

[RichardBradley]

I have found that toc adds extra newlines to my README each time it is run.
This means that I can't add it as a build step.

I think that running toc multiple times on the same file should not result in any changes, i.e. it should be idempotent.

Repro at https://gist.github.com/RichardBradley/a72c644e0e09eb501f1f

(Incorrectly raised at jonschlinkert/markdown-toc#34 )

[jonschlinkert]

have you tried using markdown-toc instead? this lib was deprecated a while back and is unlikely to be updated

[RichardBradley]

have you tried using markdown-toc instead

I tried, but I couldn't get markdown-toc to edit my README inline from the cli, it will only print out the new toc markup, which is no use to me.