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This doesn’t work because it’s equivalent to piping stdout from curl into stdin for man.

• penguinjanitor 3y ago
  It's not, that would be `man <<< "$(curl ...)" `. `man <(curl ...)` is a slightly different version of the process substitution[1] from your comment - `man =(curl ...)`. [1] https://zsh.sourceforge.io/Doc/Release/Expansion.html#Process-Substitution https://zsh.sourceforge.io/Doc/Release/Expansion.html#Proces...
  • divbzero 3y ago
    You’re right, it isn’t quite the same as piping. man <(curl ...) ends up working on Linux but for whatever reason still yields an error on macOS: No manual entry for /dev/fd/11
    • jasomill 3y ago
      curl -sL -H "Accept: text/roff" https://jamesg.blog/2024/02/28/programming-projects/ | mandoc -a works on macOS (and should also work on (Free|Net|Open)BSD, which ship similar man toolchains).
• globular-toast 3y ago
  It's actually process substitution: https://www.gnu.org/software/bash/manual/html_node/Process-Substitution.html https://www.gnu.org/software/bash/manual/html_node/Process-S... It's essentially running the process in another shell and sending its output to a tempfile. The name of that file is then substituted in the original command. So, in theory, equivalent to `inner > /tmp/file; outer /tmp/file`. This works with programs that don't read from stdin, or need two or more inputs, for example.