Messages in this thread | | | Date | Fri, 1 Aug 2014 17:15:38 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH 1/2] perf tools: Ensure --symfs ends with '/' |
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Em Fri, Aug 01, 2014 at 08:38:02AM +0900, Namhyung Kim escreveu: > Hi Arnaldo, > > On Thu, 31 Jul 2014 09:26:21 -0300, Arnaldo Carvalho de Melo wrote: > > Em Thu, Jul 31, 2014 at 01:25:52PM +0900, Namhyung Kim escreveu: > >> Are you still against my approach - adding '/' at the end of the symfs > >> string itself? It seems that mine is simpler and shorter.
> > Yes, I am.
> > We are not just concatenating two strings, we are joining two path > > components.
> > I think it is more clear and elegant to do it as python os.path.join() > > does.
> Then I think you also need to care about trailing and leading '/' in the > components so that, say, joining '/home/' and '/namhyung/' can result in > '/home/namhyung/' not '/home///namhyung/'.
Well, "/home/namhyung/" is the same as "/home///namhyung/" for POSIX: http://pubs.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap03.html#tag_03_266
So, when we can easily avoid it, no use to have a sequence of slashes, but otherwise it is harmless. > Btw, it seems like python's os.path.join() just use latter if it's an > absolute path. > > $ python > Python 2.7.3 (default, Jul 24 2012, 10:05:38) > [GCC 4.7.0 20120507 (Red Hat 4.7.0-5)] on linux2 > Type "help", "copyright", "credits" or "license" for more information. > >>> import os.path > >>> os.path.join('/home/', '/namhyung/') > '/namhyung/'
Interesting, wonder what is the rationale for that or if this is a bug.
- Arnaldo
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