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[bug-mailutils] pi[pe] [[msglist] command] misleading

From: 積丹尼 Dan Jacobson
Subject: [bug-mailutils] pi[pe] [[msglist] command] misleading
Date: Mon, 14 Jan 2019 22:25:36 +0800

$ mail
& help
pi[pe] [[msglist] command]
| [[msglist] command]
& | wc
No value set for "cmd"
& | . wc
    668    3413   42967

So it turns out msglist is not optional at all!

So the above nested brackets are misleading.

(info "(mailutils) Displaying Messages")

     Pipe the contents of specified messages through SHELL-COMMAND.  If
     SHELL-COMMAND is empty but the string variable 'cmd' is set, the
     value of this variable is used as a command name.

Maybe that should be

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