[Rd] OT: Reason/history behind ## notation for comments?

[Laurent Gatto]

For what concerns emacs users, the number of '#' has different effects
on the position of the comment. From the ESS manual: 'By default,
comments beginning with ‘###’ are aligned to the beginning of the
line. Comments beginning with ‘##’ are aligned to the current level of
indentation for the block containing the comment. Finally, comments
beginning with ‘#’ are aligned to a column on the right...'. I guess
that ## is the most wanted indentation for comments.

Best wishes,

Laurent

On 22 September 2010 07:26, Henrik Bengtsson <hb at stat.berkeley.edu> wrote:
> Off topic, but since I've observe both styles, does anyone know the
> history behind/reason for using ## instead of a single # to start
> comments in R.  I know some editors do this by default.  Is it because
> in C it is easier to distinguish (search/replace/...) comments from C
> preprocessor directives such as #include, and that's became a de facto
> standard elsewhere?
>
> /Henrik
>
> PS. I don't want to get into a debate on what's the best style.
>
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