Hello Guile users, I recently came across https://www.draketo.de/software/guile-capture-stdout-stderr.html <https://www.draketo.de/software/guile-capture-stdout-stderr.html> and wrote a commented version at https://notabug.org/ZelphirKaltstahl/guile-examples/src/master/input-output/stdout-stderr.scm <https://notabug.org/ZelphirKaltstahl/guile-examples/src/master/input-output/stdout-stderr.scm>.
While looking at the code, I was starting to wonder, what the difference between a pipe and a port is. The reference manual does not say much about any definition of what a pipe is at https://www.gnu.org/software/guile/manual/html_node/Pipes.html <https://www.gnu.org/software/guile/manual/html_node/Pipes.html> and pipe procedure return values are also named port. However, in the REPL, they look not the same: ~~~~ scheme@(guile-user)> (import (ice-9 popen)) scheme@(guile-user)> (open-input-pipe "ls -al") $2 = #<input: #{read pipe}# 13> ~~~~ And here for ports: ~~~~ scheme@(guile-user)> (call-with-output-string (λ (port) (display port))) #<output: file 7fa2a99471c0>$6 = "" ~~~~ Is a pipe just a special kind of port? Does it wrap a port? Or is it perhaps merely a different terminology used in different contexts in the reference manual? Best regards, Zelphir -- repositories: https://notabug.org/ZelphirKaltstahl