I may be doing a horrible misinterpretation of the subject, but here goes nothing.
> > > > This just uses the existing logic in mch_can_exe to populate a buffer > > > > with the > > > > absolute path to the binary. The Windows code was already walking > > > > $PATH, so it seems pointless not to actually use the information. > > > > > > Quite a few years ago I was debugging a Vim that started up slowly. It > > > turned out that walking through $PATH was the main cause for that. So I > > > don't want to walk through $PATH when not really needed. > > > > Then it would be better to use platform-specific functionality to get > > the absolute path of the running binary instead of trying to re-use > > functionality that's intended for a different purpose. > > What platform-specific functionality is there? Perhaps Linux has a way > to get the actual path, instead of using argv[0]? Standard unix (as in SUSv3) does not have any specified way to determine the running binary. It really is a thing of comparing argv[0] whilst walking through PATH. And it has more sheanigans that you may at first think: there's the tilde (~) and all relative PATH. Just look at the GNU which source to see that madness: http://cvs.savannah.gnu.org/viewvc/which/which/which.c?revision=1.41&view=markup And then you can run `realpath(3)` to get the absolute path. On the other hand, on *Linux* you can use `readlink(3)` on `/proc/self/exe` and you get the absolute path of the running binary. FreeBSD (and a handful of other BSDs support the same interface too). i.e. #include <limits.h> #include <unistd.h> char buf[PATH_MAX+1]; ssize_t len; len = readlink("/proc/self/exe", buf, PATH_MAX); buf[len] = '\0' Should *always* work on Linux. -- Mike Grochmal GPG key ID 0xC840C4F6 -- -- You received this message from the "vim_dev" maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php --- You received this message because you are subscribed to the Google Groups "vim_dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
