Handful of emacs tips
keep-lines
flush-lines
These handy functions prompt you for a regular expression and will either remove every line that does not contain that expression (keep) or remove the ones that do (flush).
finder-list-keywords
This function shows all the keywords used in the packages within emacs. In other words you can find a lot of stuff in emacs that you never knew was there.
![](http://1.bp.blogspot.com/_nkGbjVeC3i4/Sp2Yo-V-6mI/AAAAAAAAC-o/ktl1yzdx57k/s400/finder.png)
flush-lines
These handy functions prompt you for a regular expression and will either remove every line that does not contain that expression (keep) or remove the ones that do (flush).
finder-list-keywords
This function shows all the keywords used in the packages within emacs. In other words you can find a lot of stuff in emacs that you never knew was there.
![](http://1.bp.blogspot.com/_nkGbjVeC3i4/Sp2Yo-V-6mI/AAAAAAAAC-o/ktl1yzdx57k/s400/finder.png)