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The Windows implementation of
fork()
,_fork_win32()
, had some code to try to allow commands like gitk to be executed. However, this code did not work for multiple reasons. The main issue is that on Windows, gitk is actually provided by a batch file named gitk.cmd. If the first element in theargs
list passed tosubprocess.Popen()
is simply"gitk"
, the file won't be found and the command will fail. This could be solved by passingshell=True
toPopen()
, but that is not ideal. The fix provided here is to implement the same path searching algorithm that the Windows shell uses to locate an executable, taking into account thePATHEXT
environment variable, and to use the result of that search as the first element of theargs
list forsubprocess.Popen()
.