Which backslash escape will be the last to get meaning in perl?

• \F (Update 2015-06-08: \F is now used starting from perl 5.16.0)
• \I
• \J
• \M
• \O
• \P (Update 08 aug 29: \P is used up, dunno how I messed this up.)
• \T
• \Y
• \i
• \j
• \m
• \o (Update 2010-11-24: remove: \o is now used starting from perl 5.13.3)
• \q
• \y
• some punctuation
• some control char
• some non-ascii
• another double meaning
• (Update:) third meaning for \1 or \b or \N (Update 2010-11-24: added \N for it too now has two meanings)

Don't worry, vim regexen are much worse.

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.