Execution of larger blocks of pasted code often fails?

Hello List,

When i paste a large block of R code from an editor to the R command line
the execution of the code will often fail at some point because it is not
pasted as it was copied.

This reminds me of the Tommy Cooper joke (I can't do the voice,
especially over email):

Man: "Doctor, it hurts when I do this" [waves arm about]
Doc: "Well don't do that then".

 Cutting and pasting code - especially large blocks of code - is a
poor way to work with R. Make your code re-usable by putting it in
functions with sensible arguments and meaningful return values. Debug
your functions with little test data sets, or go the whole hog and use
package:testthat for writing test suites. Organise your functions into
packages and use package:devtools to make packages REALLY REALLY easy.
 Easier than having a big text file with all the R code you've ever
written in, and then pasting chunks of into R every time. Or pasting
it back into your big text file and then changing a little bit of it
so you now have two very similar chunks of R code with the same bug
now in two positions....

 Take a day to read up on how to effectively work with R with
functions and packages, then revisit your work and see how that can
apply to you. You'll get that day back within a couple of weeks.

B