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📛 NAME

ap - nmh parser of RFC 822-style addresses

🚀 Quick Reference

Use Case	Command	Description
Parse a single address	ap "user@example.com"	Output RFC 822‑proper format
Parse multiple addresses	ap "joe@domain.com" "sue@other.com"	One RFC 822 result per argument
Custom output (e.g., mailbox and host)	ap -format "%(mbox) at %(host)" "addr"	Extract specific fields
Use a format file	ap -form myformat.fmt "addr"	Read format from a file
Show only parse errors	ap -format "%{error}" "bad@address"	Print diagnostic string on failure
Default behaviour	ap "addr1" "addr2" ...	Renders proper RFC 822 or error message

📄 SYNOPSIS

/usr/lib/mh/ap [-help] [-version] [-form formatfile] [-format string] [-width columns] addrs ...

📖 DESCRIPTION

ap is a program that parses addresses according to the ARPA Internet standard. It also understands many non‑standard formats. It is useful for seeing how nmh will interpret an address.

The ap program treats each argument as one or more addresses, and prints those addresses out in the official RFC 822 format. Hence, it is usually best to enclose each argument in quotes for the shell.

To override the output format used by ap, the -format string or -format file switches are used. This permits individual fields of the address to be extracted with ease. The string is simply a format string, and the file is simply a format file. See mh‑format(5) for the details.

In addition to the standard escapes, ap also recognizes the following additional escape:

Escape	Returns	Description
error	string	A diagnostic if the parse failed

Here is the default format string used by ap:

%<{error}%{error}: %{text}%|%(putstr(proper{text}))%>

which says that if an error was detected, print the error, a `:', and the address in error. Otherwise, output the RFC 822‑proper format of the address.

📂 FILES

• $HOME/.mh_profile – The user's profile.
• /etc/nmh/mts.conf – The mts configuration file.

👤 PROFILE COMPONENTS

None

🔗 SEE ALSO

• fmttest(1), dp(8)
• Standard for the Format of ARPA Internet Text Messages (RFC 822)

⚙️ DEFAULTS

• -format — As described above.
• -width — The width of the terminal.

📌 CONTEXT

None

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nmh-1.7.1   2013-12-05   AP(8mh)

📛 NAME 🚀 Quick Reference 📄 SYNOPSIS 📖 DESCRIPTION 📂 FILES 👤 PROFILE COMPONENTS 🔗 SEE ALSO ⚙️ DEFAULTS 📌 CONTEXT