On 7/20/20 5:24 PM, H. S. Teoh wrote:
On Mon, Jul 20, 2020 at 04:55:52PM -0400, Steven Schveighoffer via
Digitalmars-d-learn wrote:
I am doing some scripting via D, and using std.process.execute to git
clone things.
I don't want any user interaction. Occasionally, I get a repository
that no longer exists (404). Then git comes up and asks for a
username/password. I want it to just fail. Apparently git has no
option to be non-interactive, it supposedly checks stdin to see if
it's a tty, and only errors if it's not.
Try --no-pager perhaps? Not sure if that would help, since this isn't
technically a pager that's prompting you.
Another way is to take a look at std.process.execute's implementation. I
believe it's just a wrapper around spawnProcess. What you want is to
adapt that implementation so that it closes stdin before fork-n-exec'ing
git; that should stop any prompts.
I ran the git command from the shell directly with < /dev/null and it
still can ask for username/password. I don't know if it's possible to
prevent it.
One thing to be aware of is that it may not necessarily be git itself
that's prompting you; it could be a helper program like a password
manager that creates the prompt. In that case you probably have to find
out what it is, and disable it somehow (usually by overriding some
environment variable that gets passed to the git child process).
I think you might be right. I don't know how it's accessing my terminal,
but clearly it can keep doing so even without any handles open. I'm even
using ctrl-D and it continues to come up with prompts and wait for input.
I was able to solve it by backgrounding the process, and then quitting
the parent shell, then it had no option but to error ;)
I'm still interested in knowing how this works, if anyone knows.
Searching for things like "how does git access my terminal when I closed
stdin" doesn't give me much information.
-Steve
