On 19 March 2014 16:51, Eli Zaretskii wrote: > > Date: Wed, 19 Mar 2014 13:19:28 +0000 > > From: Reuben Thomas > > Cc: Andreas Schwab , 17036@debbugs.gnu.org > > > > On 19 March 2014 13:10, Stefan wrote: > > > > > > I could imagine a `restart-emacs' command having some small utility. > > > > > > Could the w32 build support something like POSIX's `exec'? > > > > > > Windows has execvp... > http://msdn.microsoft.com/en-us/library/3xw6zy53.aspx > > Don't believe the sales people. MS's execvp is buggy, and even if we > forget about those bugs, it won't do what is expected here: it won't > keep the file descriptors open in the original process still open in > the overlaid process. That's because there's no 'exec' system call on > Windows, so execvp is _emulated_: the original process simply invokes > the new one as its child process, and then immediately exits. > That's good enough for restart-emacs. > So the answer to Stefan is: no, this cannot be done on Windows, not > without some custom code to let the re-executed Emacs inherit all of > the file descriptors which were open in the original Emacs process. > It's fine for what i had in mind, namely Emacs simply launching another command with arguments, much as a Lisp callcc. This could be documented as a limitation on Windows. -- http://rrt.sc3d.org