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Process Substitution Locks Shell #1032

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leath-dub opened this issue Sep 10, 2023 · 1 comment

leath-dub commented Sep 10, 2023

This is easily reproducible even on the master branch run the following

ls <(echo hello)

This should just print a temp path, however It ends up locking the shell - only responding to Ctrl-c.

Sponsor Collaborator

theclapp commented Sep 16, 2023

It's not completely broken. gosh appears to wait until something reads the FIFO it creates (whereas bash doesn't care). If you do that, it works:

$ cat <(echo .)
.

If you cat the FIFO in a different shell, that unblocks gosh:

<<<window 1>>>
$ ls -l <(echo .)
prw-r--r--@ 1 lmc  staff  0 Sep 16 11:35 /var/folders/9d/vt3kqx293xx8w3tn8m1jy_wc0000gn/T//sh-interp-12e05f50832eb231
<gosh blocks>

<<<window 2>>>
$ cat /var/folders/9d/vt3kqx293xx8w3tn8m1jy_wc0000gn/T//sh-interp-12e05f50832eb231
.
$

<<<window 1>>>
<gosh unblocks>
$

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