On Sun, Nov 29, 2009 at 11:18 AM, Duncan Murdoch <murd...@stats.uwo.ca> wrote: > On 29/11/2009 11:50 AM, Peng Yu wrote: >> >> On Sun, Nov 29, 2009 at 10:40 AM, Duncan Murdoch <murd...@stats.uwo.ca> >> wrote: >>> >>> On 29/11/2009 10:58 AM, Peng Yu wrote: >>>> >>>> Some lines are indented by tabs and some lines are indented by spaces, >>>> in R source code. This might due to the fact that the source code is >>>> not from a single person. But I think that it is better to enforce a >>>> single convention. >>>> >>>> My editor defaults a tab to 8 spaces. So some source doesn't seem to >>>> be indented correctly in my editor. Since tab may be displayed >>>> differently in different editor, I recommend to replace all the tabs >>>> by the appropriate number of spaces to ensure the same indentation >>>> display. >>> >>> The R source code assumes that tabs occur every 8 columns, so if your >>> editor >>> is working properly, it should display files as intended. >>> >>>> Could somebody update the source code in the future version by >>>> replacing tabs by spaces and enforce such a coding convention in the >>>> future? >>> >>> No, that would not be feasible, for the reason you give in the second >>> sentence of your post. >> >> I don't understand why it is not feasible. The spaces are displayed >> the same in all editors. If there are no tabs, the code should display >> the same in all editors. I know some languages that are recommended to >> have spaces rather than tabs for this reason. > > It is not feasible because it would require everyone who edits the source > code to change the configuration of their editors. In my case, that would > require changing about 3 different types of editors (I work on several > different platforms). I would probably miss one, and re-introduce tabs the > next time I edited a file on that editor.
http://google-styleguide.googlecode.com/svn/trunk/google-r-style.html Here is the R style, which does not recommend using tabs. Although it might take some time to forbidden the use of tabs, it will eventually be a good practice that benefits everyone in the future. > I've already seen problems in the NEWS and CHANGES files, which have > recently changed to UTF-8 encoding. It's very irritating that my editor > switches back to the Windows default if it doesn't see a byte-order mark, > and that some editors that I use automatically delete the BOM. Requiring a > particular "encoding" for tabs (i.e. converting them to spaces) would lead > to the same problems, but on a much bigger scale. > > Duncan Murdoch > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
