[perl #131176] Obsolete ?PATTERN? still documented

perlreref also mentions ?pattern?

On Wed, 19 Apr 2017 09:33:41 -0700, ikegami@adaelis.com wrote:
> This is a bug report for perl from ikegami@adaelis.com,
> generated with the help of perlbug 1.40 running under perl 5.24.0.
> 
> 
> -----------------------------------------------------------------
> [Please describe your issue here]
> 
> ?PATTERN? was removed in 5.22, but it's still documented.
> 
> $ perldoc -o term perlop | grep -P 'PATTERN'
>             PATTERN in "m/PATTERN/". If "'" is used as the delimiter,
> no
>     "m/PATTERN/msixpodualngc"
>     "/PATTERN/msixpodualngc"
>             described in "m?PATTERN?" below. If "'" (single quote) is
> the
>             delimiter, no interpolation is performed on the PATTERN.
> When
>             PATTERN may contain variables, which will be interpolated
> every
>             If the PATTERN evaluates to the empty string, the last
>     "m?PATTERN?msixpodualngc"
>     "?PATTERN?msixpodualngc"
>             This is just like the "m/PATTERN/" search, except that it
> matches
>             In the past, the leading "m" in "m?PATTERN?" was optional,
> but
>     "s/PATTERN/REPLACEMENT/msixpodualngcer"
>             done on either the PATTERN or the REPLACEMENT. Otherwise,
> if the
>             PATTERN contains a "$" that looks like a variable rather
> than an
>             replacement text is not evaluated as a command. If the
> PATTERN
> is
> 
> $ perl -e'?foo?'
> syntax error at -e line 1, near "?"
> Execution of -e aborted due to compilation errors.
> 
> 
> [Please do not change anything below this line]
> -----------------------------------------------------------------
> ---
> Flags:
>     category=core
>     severity=low
> ---
> Site configuration information for perl 5.24.0:
> 
> Configured by ikegami at Wed May 25 21:22:43 PDT 2016.
> 
> Summary of my perl5 (revision 5 version 24 subversion 0)
> configuration:
> 
> Platform:
>   osname=linux, osvers=3.2.61-grsec-modsign,
> archname=x86_64-linux-thread-multi
>   uname='linux springfield 3.2.61-grsec-modsign #1 smp tue aug 12
> 09:58:26 utc 2014 x86_64 x86_64 x86_64 gnulinux '
>   config_args='-de -Dprefix=/home/ikegami/usr/perlbrew/perls/5.24.0t
> -DPERL_SUB_DEPTH_WARN=1000 -Dusethreads
> -Aeval:scriptdir=/home/ikegami/usr/perlbrew/perls/5.24.0t/bin'
>   hint=recommended, useposix=true, d_sigaction=define
>   useithreads=define, usemultiplicity=define
>   use64bitint=define, use64bitall=define, uselongdouble=undef
>   usemymalloc=n, bincompat5005=undef
> Compiler:
>   cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -fwrapv
> -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include
> -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
>   optimize='-O2',
>   cppflags='-D_REENTRANT -D_GNU_SOURCE -fwrapv -fno-strict-aliasing
> -pipe
> -fstack-protector -I/usr/local/include'
>   ccversion='', gccversion='4.6.3', gccosandvers=''
>   intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678,
> doublekind=3
>   d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16,
> longdblkind=3
>   ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t',
> lseeksize=8
>   alignbytes=8, prototype=define
> Linker and Libraries:
>   ld='cc', ldflags =' -fstack-protector -L/usr/local/lib'
>   libpth=/usr/local/lib /usr/lib/gcc/x86_64-linux-gnu/4.6/include-
> fixed
> /usr/include/x86_64-linux-gnu /usr/lib /lib/x86_64-linux-gnu
> /lib/../lib
> /usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib
>   libs=-lpthread -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lc
> -lgdbm_compat
>   perllibs=-lpthread -lnsl -ldl -lm -lcrypt -lutil -lc
>   libc=libc-2.15.so, so=so, useshrplib=false, libperl=libperl.a
>   gnulibc_version='2.15'
> Dynamic Linking:
>   dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
>   cccdlflags='-fPIC', lddlflags='-shared -O2 -L/usr/local/lib
> -fstack-protector'
> 
> 
> ---
> @INC for perl 5.24.0:
> 
> /home/ikegami/usr/perlbrew/perls/5.24.0t/lib/site_perl/5.24.0/x86_64-
> linux-thread-multi
>     /home/ikegami/usr/perlbrew/perls/5.24.0t/lib/site_perl/5.24.0
> 
> /home/ikegami/usr/perlbrew/perls/5.24.0t/lib/5.24.0/x86_64-linux-
> thread-multi
>     /home/ikegami/usr/perlbrew/perls/5.24.0t/lib/5.24.0
>     .
> 
> ---
> Environment for perl 5.24.0:
>     HOME=/home/ikegami
>     LANG (unset)
>     LANGUAGE (unset)
>     LC_ALL=en_CA.utf8
>     LC_COLLATE=C
>     LD_LIBRARY_PATH=/home/ikegami/lib
>     LOGDIR (unset)
> 
> PATH=/home/ikegami/usr/perlbrew/bin:/home/ikegami/usr/perlbrew/perls/latest/bin:.:/home/ikegami/bin:/home/ikegami/.gems/bin:/usr/lib/ruby/gems/1.8/bin/:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games
>     PERLBREW_BASHRC_VERSION=0.71
>     PERLBREW_HOME=/home/ikegami/.perlbrew
>     PERLBREW_MANPATH=/home/ikegami/usr/perlbrew/perls/latest/man
> 
> PERLBREW_PATH=/home/ikegami/usr/perlbrew/bin:/home/ikegami/usr/perlbrew/perls/latest/bin
>     PERLBREW_PERL=latest
>     PERLBREW_ROOT=/home/ikegami/usr/perlbrew
>     PERLBREW_VERSION=0.71
>     PERL_BADLANG (unset)
>     SHELL=/bin/bash




---
via perlbug:  queue: perl5 status: new
https://rt.perl.org/Ticket/Display.html?id=131176

• [perl #131176] Obsolete ?PATTERN? still documented by Eric Brine
• [perl #131176] Obsolete ?PATTERN? still documented by Karl Williamson via RT
• [perl #131176] Obsolete ?PATTERN? still documented by Eric Brine via RT
• Re: [perl #131176] Obsolete ?PATTERN? still documented by demerphq