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-.\"
-.\" %nmhwarning%
-.\"
-.TH PICK %manext1% "%nmhdate%" MH.6.8 [%nmhversion%]
-.SH NAME
-pick \- search for messages by content
-.SH SYNOPSIS
-.HP 5
-.na
-.B pick
-.RI [ +folder ]
-.RI [ msgs ]
-.RB [ \-and
-\&...]
-.RB [ \-or
-\&...]
-.RB [ \-not
-\&...]
-.RB [ \-lbrace
-\&...
-.BR \-rbrace ]
-.RB [ \-\|\-component
-.IR pattern ]
-.RB [ \-cc
-.IR pattern ]
-.RB [ \-date
-.IR pattern ]
-.RB [ \-from
-.IR pattern ]
-.RB [ \-search
-.IR pattern ]
-.RB [ \-subject
-.IR pattern ]
-.RB [ \-to
-.IR pattern ]
-.RB [ \-after
-.IR date ]
-.RB [ \-before
-.IR date ]
-.RB [ \-datefield
-.IR field ]
-.RB [ \-sequence
-.I name
-\&...]
-.RB [ \-public " | " \-nopublic ]
-.RB [ \-zero " | " \-nozero ]
-.RB [ \-list " | " \-nolist ]
-.RB [ \-version ]
-.RB [ \-help ]
-.PP
-typical usage:
-.PP
-.RS 5
-.nf
-scan\0`pick\0\-from\0jones`
-pick\0\-to\0holloway\0\-sequence\0select
-show\0`pick\0\-before\0friday`
-.fi
-.RE
-.ad
-.SH DESCRIPTION
-.B Pick
-searches within a folder for messages with the specified
-contents, and then identifies those messages.  Two types of search
-primitives are available: pattern matching and date constraint
-operations.
-.PP
-A modified
-.BR grep (1)
-is used to perform the matching, so the
-full regular expression (see
-.BR ed (1))
-facility is available
-within
-.IR pattern .
-With
-.BR \-search ,
-.I pattern
-is used directly, and with the others, the grep pattern constructed is:
-.PP
-.RS 5
-`component[ \\t]*:\&.*pattern'
-.RE
-.PP
-This means that the pattern specified for a
-.B \-search
-will be found
-everywhere in the message, including the header and the body, while
-the other pattern matching requests are limited to the single specified
-component.  The expression
-.PP
-.RS 5
-`\-\|\-component\ pattern'
-.RE
-.PP
-is a shorthand for specifying
-.PP
-.RS 5
-`\-search \*(lqcomponent[ \\t]*:\&.*pattern\*(rq\ '
-.RE
-.PP
-It is used to pick a component which is not one of \*(lqTo:\*(rq,
-\*(lqcc:\*(rq, \*(lqDate:\*(rq, \*(lqFrom:\*(rq, or \*(lqSubject:\*(rq.
-An example is
-.RB \*(lq "pick\0\-\|\-reply\-to\0pooh" \*(rq.
-.PP
-Pattern matching is performed on a per\-line basis.  Within the header
-of the message, each component is treated as one long line, but in the
-body, each line is separate.  Lower\-case letters in the search pattern
-will match either lower or upper case in the message, while upper case
-will match only upper case.
-.PP
-Note that since the
-.B \-date
-switch is a pattern matching operation (as
-described above), to find messages sent on a certain date the pattern
-string must match the text of the \*(lqDate:\*(rq field of the message.
-.PP
-Independent of any pattern matching operations requested, the switches
-.B \-after
-.I date
-or
-.B \-before
-.I date
-may also be used to introduce date/time
-constraints on all of the messages.  By default, the \*(lqDate:\*(rq
-field is consulted, but if another date yielding field (such as
-\*(lqBB\-Posted:\*(rq or \*(lqDelivery\-Date:\*(rq) should be used, the
-.B \-datefield
-.I field
-switch may be used.
-.PP
-With
-.B \-before
-and
-.BR \-after ,
-.B pick
-will actually parse the date
-fields in each of the messages specified in `msgs' and compare them
-to the date/time specified.  If
-.B \-after
-is given, then only those
-messages whose \*(lqDate:\*(rq field value is chronologically after the
-date specified will be considered.  The
-.B \-before
-switch specifies the
-complimentary action.
-.PP
-Both the
-.B \-after
-and
-.B \-before
-switches take legal 822\-style date
-specifications as arguments.
-.B Pick
-will default certain missing
-fields so that the entire date need not be specified.  These fields
-are (in order of defaulting): timezone, time and timezone, date, date
-and timezone.  All defaults are taken from the current date, time,
-and timezone.
-.PP
-In addition to 822\-style dates,
-.B pick
-will also recognize any of
-the days of the week (\*(lqsunday\*(rq, \*(lqmonday\*(rq, and so on),
-and the special dates \*(lqtoday\*(rq, \*(lqyesterday\*(rq (24 hours
-ago), and \*(lqtomorrow\*(rq (24 hours from now).  All days of the
-week are judged to refer to a day in the past (e.g., telling \fIpick\fR
-\*(lqsaturday\*(rq on a \*(lqtuesday\*(rq means \*(lqlast\ saturday\*(rq
-not \*(lqthis\ saturday\*(rq).
-.PP
-Finally, in addition to these special specifications,
-.B pick
-will
-also honor a specification of the form \*(lq\-dd\*(rq, which means
-\*(lqdd days ago\*(rq.
-.PP
-.B Pick
-supports complex boolean operations on the searching primitives
-with the
-.BR \-and ,
-.BR \-or ,
-.BR \-not ,
-and
-.B \-lbrace
-.B \&...
-.B \-rbrace
-switches.
-For example,
-.PP
-.RS 5
-.nf
-pick\0\-after\0yesterday\0\-and
-     \-lbrace\0\-from\0freida\0\-or\0\-from\0fear\0\-rbrace
-.fi
-.RE
-.PP
-identifies messages recently sent by \*(lqfrieda\*(rq or \*(lqfear\*(rq.
-.PP
-The matching primitives take precedence over the
-.B \-not
-switch, which in turn takes precedence over
-.B \-and
-which in turn takes precedence
-over
-.BR \-or .
-To override the default precedence, the
-.B \-lbrace
-and
-.B \-rbrace
-switches are provided, which act just like opening and closing
-parentheses in logical expressions.
-.PP
-If no search criteria are given, all the messages specified on the
-command line are selected (this defaults to \*(lqall\*(rq).
-.PP
-Once the search has been performed, if the
-.B \-list
-switch is given, the
-message numbers of the selected messages are written to the standard
-output separated by newlines.  This is
-.B extremely
-useful for
-quickly generating arguments for other
-.B nmh
-programs by using the
-\*(lqbackquoting\*(rq syntax of the shell.  For example, the command
-.PP
-.RS 5
-scan\0`pick\0+todo\0\-after\0\*(lq31 Mar 83 0123 PST\*(rq`
-.RE
-.PP
-says to
-.B scan
-those messages in the indicated folder which meet the
-appropriate criterion.  Note that since
-.BR pick 's
-context changes
-are written out prior to
-.BR scan 's
-invocation, you need not give
-the folder argument to
-.B scan
-as well.
-.PP
-The
-.B \-sequence
-.I name
-switch may be given once for each sequence the user wishes to define.
-For each sequence named, that sequence will be defined to mean exactly
-those messages selected by
-.BR pick .
-For example,
-.PP
-.RS 5
-pick\0\-from\0frated\0\-seq\0fred
-.RE
-.PP
-defines a new message sequence for the current folder called
-\*(lqfred\*(rq which contains exactly those messages that were selected.
-.PP
-By default,
-.B pick
-will zero the sequence before adding it.  This
-action can be disabled with the
-.B \-nozero
-switch, which means that the
-messages selected by
-.B pick
-will be added to the sequence, if it
-already exists, and any messages already a part of that sequence will
-remain so.
-.PP
-The
-.B \-public
-and
-.B \-nopublic
-switches are used by
-.B pick
-in the
-same way
-.B mark
-uses them.
-
-.SH FILES
-.fc ^ ~
-.nf
-.ta \w'%etcdir%/ExtraBigFileName  'u
-^$HOME/.mmh/profile~^The user profile
-.fi
-
-.SH "PROFILE COMPONENTS"
-.fc ^ ~
-.nf
-.ta 2.4i
-.ta \w'ExtraBigProfileName  'u
-^Path:~^To determine the user's mail storage
-^Current\-Folder:~^To find the default current folder
-.fi
-
-.SH "SEE ALSO"
-mark(1)
-
-.SH DEFAULTS
-.nf
-.RB ` +folder "' defaults to the current folder"
-.RB ` msgs "' defaults to all"
-.RB ` "\-datefield date" '
-.RB ` \-zero '
-.RB ` \-list "' is the default if no `\-sequence', `\-nolist' otherwise"
-.fi
-
-.SH CONTEXT
-If a folder is given, it will become the current folder.
-
-.SH HISTORY
-In previous versions of
-.BR MH ,
-the
-.B pick
-command would
-.BR show ,
-.BR scan ,
-or
-.B refile
-the selected messages.  This was rather
-\*(lqinverted logic\*(rq from the UNIX point of view, so
-.B pick
-was changed to define sequences and output those sequences.  Hence,
-.B pick
-can be used to generate the arguments for all other
-.B MH
-commands, instead of giving
-.B pick
-endless switches for invoking those commands
-itself.
-.PP
-Also, previous versions of
-.B pick
-balked if you didn't specify
-a search string or a date/time constraint.  The current version does
-not, and merely matches the messages you specify.  This lets you type
-something like:
-.PP
-.RS 5
-show\0`pick\0last:20\0\-seq\0fear`
-.RE
-.PP
-instead of typing
-.PP
-.RS 5
-.nf
-mark\0\-add\0\-nozero\0\-seq\0fear\0last:20
-show\0fear
-.fi
-.RE
-.PP
-Finally, timezones used to be ignored when comparing dates: they aren't
-any more.
-
-.SH "HELPFUL HINTS"
-Use
-.RB \*(lq "pick sequence \-list" \*(rq
-to enumerate the messages in a sequence
-(such as for use by a shell script).
-
-.SH BUGS
-The argument to the
-.B \-after
-and
-.B \-before
-switches must be interpreted
-as a single token by the shell that invokes
-.BR pick .
-Therefore, one
-must usually place the argument to this switch inside double\-quotes.
-Furthermore, any occurrence of
-.B \-datefield
-must occur prior to the
-.B \-after
-or
-.B \-before
-switch it applies to.
-.PP
-If
-.B pick
-is used in a back\-quoted operation, such as
-.PP
-.RS 5
-scan\0`pick\0\-from\0jones`
-.RE
-.PP
-and
-.B pick
-selects no messages (e.g., no messages are from
-\*(lqjones\*(rq), then the shell will still run the outer command (e.g.,
-.BR scan ).
-Since no messages were matched,
-.B pick
-produced
-no output, and the argument given to the outer command as a result of
-backquoting
-.B pick
-is empty.  In the case of
-.B nmh
-programs,
-the outer command now acts as if the default `msg' or `msgs' should be
-used (e.g., \*(lqall\*(rq in the case of
-.BR scan ).
-To prevent this
-unexpected behavior, if
-.B \-list
-was given, and if its standard output is not a tty, then
-.B pick
-outputs the illegal message number \*(lq0\*(rq
-when it fails.  This lets the outer command fail gracefully as well.
-.PP
-The pattern syntax \*(lq[l-r]\*(rq is not supported; each letter to be
-matched must be included within the square brackets.