On Thu, Sep 28, 2017 at 3:35 AM, Junio C Hamano <gitster@xxxxxxxxx> wrote: > "Eric Rannaud" <e@xxxxxxxxxxxxxxxx> writes: > >> +# The commands in input_file should not produce any output on the file >> +# descriptor set with --cat-blob-fd (or stdout if unspecified). > > Thanks for documenting this. Swapping the order of starting > fast-import and feeding its input (which is one change in this > version relative to the previous one) alone would not help, because > in the updated order in this patch, nobody is reading from > fast-import until the parent process finishes feeding it. Darn. That's correct, on a platform with blocking pipes it would not work. I will start the input cat in the background (so it may block while writing), before reading from the output of fast-import.
