Use HasPrefix() instead of strncmp().

[nmh] / man / pick.man

diff --git a/man/pick.man b/man/pick.man
index a2a54c4122637b7a834a2b75127e84f4b670da0e..dbed194ac9337cee93fd8aa488fd182815185d94 100644 (file)
--- a/man/pick.man
+++ b/man/pick.man
@@ -1,264 +1,430 @@
+.TH PICK %manext1% "August 3, 2014" "%nmhversion%"

 .\"
 .\" %nmhwarning%
 .\"
 .\" %nmhwarning%

-.\" $Id$

 .\"
 .\"

-.\" include the -mh macro file
-.so %etcdir%/tmac.h
-.\"
-.TH PICK %manext1% MH.6.8 [%nmhversion%]

 .SH NAME
 pick \- search for messages by content
 .SH SYNOPSIS
 .SH NAME
 pick \- search for messages by content
 .SH SYNOPSIS

-.in +.5i
-.ti -.5i
-pick
-\%[+folder] \%[msgs]
-\%[\-and\ ...] \%[\-or\ ...] \%[\-not\ ...]
-.br
-\%[\-lbrace\ ...\ \-rbrace]
-\%[\-\|\-component\ pattern]
-.br
-\%[\-cc\ pattern]
-\%[\-date\ pattern]
-\%[\-from\ pattern]
-.br
-\%[\-search\ pattern]
-\%[\-subject\ pattern]
-\%[\-to\ pattern]
-.br
-\%[\-after\ date]
-\%[\-before\ date]
-\%[\-datefield\ field]
-.br
-\%[\-sequence\ name\ ...]
-\%[\-public] \%[\-nopublic]
-\%[\-zero]
-.br
-\%[\-nozero]
-\%[\-list] \%[\-nolist]
-\%[\-version]
-\%[\-help]
-.ti .5i
-
+.HP 5
+.na
+.B pick
+.RB [ \-help ]
+.RB [ \-version ]
+.RI [ +folder ]
+.RI [ msgs ]
+.RB [ \-reverse
+\&...]
+.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 [ \-nosequence ]
+.RB [ \-public " | " \-nopublic ]
+.RB [ \-zero " | " \-nozero ]
+.RB [ \-list " | " \-nolist ] 
+.RB [ \-debug ]
+.PP

 typical usage:
 typical usage:

-.br
+.PP
+.RS 5
+.nf

 scan\0`pick\0\-from\0jones`
 scan\0`pick\0\-from\0jones`

-.br

 pick\0\-to\0holloway\0\-sequence\0select
 pick\0\-to\0holloway\0\-sequence\0select

-.br

 show\0`pick\0\-before\0friday`
 show\0`pick\0\-before\0friday`

-.in -.5i
+.fi
+.RE
+.ad

 .SH DESCRIPTION
 .SH DESCRIPTION

-\fIPick\fR searches within a folder for messages with the specified
+.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.
 contents, and then identifies those messages.  Two types of search
 primitives are available: pattern matching and date constraint
 operations.

-
-A modified \fIgrep\fR(1) is used to perform the matching, so the
-full regular expression (see \fIed\fR(1)) facility is available
-within `pattern'.  With `\-search', `pattern' is used directly,
-and with the others, the grep pattern constructed is:
-
-.ti +.5i
-\*(lqcomponent[ \\t]*:\&.*pattern\*(rq
-
-This means that the pattern specified for a `\-search' will be found
+.PP
+A modified
+.IR grep (1)
+is used to perform the matching, so the
+full regular expression (see
+.IR 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
 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

-
-.ti +.5i
+.PP
+.RS 5

 `\-\|\-component\ pattern'
 `\-\|\-component\ pattern'

-
+.RE
+.PP

 is a shorthand for specifying
 is a shorthand for specifying

-
-.ti +.5i
+.PP
+.RS 5

 `\-search \*(lqcomponent[ \\t]*:\&.*pattern\*(rq\ '
 `\-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.
 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 `pick\0\-\|\-reply\-to\0pooh'.
-
+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.
 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.

-
-Note that since the `\-date' switch is a pattern matching operation (as
+.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.
 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
 Independent of any pattern matching operations requested, the switches

-`\-after date' or `\-before date' may also be used to introduce date/time
+.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
 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

-`\-datefield\ field' switch may be used.
-
-With `\-before' and `\-after', \fIpick\fR will actually parse the date
+.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
 fields in each of the messages specified in `msgs' and compare them

-to the date/time specified.  If `\-after' is given, then only those
+to the date/time specified.  If
+.B \-after
+is given, then only those

 messages whose \*(lqDate:\*(rq field value is chronologically after the
 messages whose \*(lqDate:\*(rq field value is chronologically after the

-date specified will be considered.  The `\-before' switch specifies the
+date specified will be considered.  The
+.B \-before
+switch specifies the

 complimentary action.
 complimentary action.

-
-Both the `\-after' and `\-before' switches take legal 822\-style date
-specifications as arguments.  \fIPick\fR will default certain missing
+.PP
+Both the
+.B \-after
+and
+.B \-before
+switches take legal RFC 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.
 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.

-
-In addition to 822\-style dates, \fIpick\fR will also recognize any of
+.PP
+In addition to RFC 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).
 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).

-
-Finally, in addition to these special specifications, \fIpick\fR will
+.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.
 also honor a specification of the form \*(lq\-dd\*(rq, which means
 \*(lqdd days ago\*(rq.

-
-\fIPick\fR supports complex boolean operations on the searching primitives
-with the `\-and', `\-or', `\-not', and `\-lbrace\ ...\ \-rbrace' switches.
+.PP
+Use the
+.BR \-reverse
+switch to make
+.B pick
+find matching messages in reverse order, working from the highest message
+number down to the lowest.  This can be useful in for searching recent
+messages in large folders, for example,
+.PP
+.RS 5
+.nf
+pick\0\-reverse\0\-from\0frated\0|\0xargs\0\-n1\0scan
+.fi
+.RE
+.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,
 For example,

-
-.ti +.5i
-.ie t \{\
-pick\0\-after\0yesterday\0\-and\0\-lbrace\0\-from\0freida\0\-or\0\-from\0fear\0\-rbrace
-.\}
-.el \{\
+.PP
+.RS 5
+.nf

 pick\0\-after\0yesterday\0\-and
 pick\0\-after\0yesterday\0\-and

-.br
-.ti +1i
-\-lbrace\0\-from\0freida\0\-or\0\-from\0fear\0\-rbrace
-.\}
-
+     \-lbrace\0\-from\0freida\0\-or\0\-from\0fear\0\-rbrace
+.fi
+.RE
+.PP

 identifies messages recently sent by \*(lqfrieda\*(rq or \*(lqfear\*(rq.
 identifies messages recently sent by \*(lqfrieda\*(rq or \*(lqfear\*(rq.

-
-The matching primitives take precedence over the `\-not' switch, which
-in turn takes precedence over `\-and' which in turn takes precedence
-over `\-or'.  To override the default precedence, the `\-lbrace' and
-`\-rbrace' switches are provided, which act just like opening and closing
+.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.
 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).
 If no search criteria are given, all the messages specified on the
 command line are selected (this defaults to \*(lqall\*(rq).

-
-Once the search has been performed, if the `\-list' switch is given, the
+.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
 message numbers of the selected messages are written to the standard

-output separated by newlines.  This is \fIextremely\fR useful for
-quickly generating arguments for other \fInmh\fR programs by using the
+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
 \*(lqbackquoting\*(rq syntax of the shell.  For example, the command

-
-.ti +.5i
+.PP
+.RS 5

 scan\0`pick\0+todo\0\-after\0\*(lq31 Mar 83 0123 PST\*(rq`
 scan\0`pick\0+todo\0\-after\0\*(lq31 Mar 83 0123 PST\*(rq`

-
-says to \fIscan\fR those messages in the indicated folder which meet the
-appropriate criterion.  Note that since \fIpick\fR\0's context changes
-are written out prior to \fIscan\fR\0's invocation, you need not give
-the folder argument to \fIscan\fR as well.
-
-Regardless of the operation of the `\-list' switch, the `\-sequence name'
+.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
 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 \fIpick\fR.  For example,
-
-.ti +.5i
+those messages selected by
+.BR pick .
+For example,
+.PP
+.RS 5

 pick\0\-from\0frated\0\-seq\0fred
 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.
 defines a new message sequence for the current folder called
 \*(lqfred\*(rq which contains exactly those messages that were selected.

-
-Note that whenever \fIpick\fR processes a `\-sequence\ name' switch, it
-sets `\-nolist'.
-
-By default, \fIpick\fR will zero the sequence before adding it.  This
-action can be disabled with the `\-nozero' switch, which means that the
-messages selected by \fIpick\fR will be added to the sequence, if it
+.PP
+The
+.B \-nosequence
+switch will disable all previously named sequences, allowing
+those established by a profile component to be overridden.
+.PP
+By default,
+.B pick
+will zero a 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.
 already exists, and any messages already a part of that sequence will
 remain so.

-
-The `\-public' and `\-nopublic' switches are used by \fIpick\fR in the
-same way \fImark\fR uses them.
-.Fi
+.PP
+The
+.B \-public
+and
+.B \-nopublic
+switches are used by
+.B pick
+in the
+same way
+.B mark
+uses them.
+.PP
+The
+.B \-debug
+switch causes pick to output a representation of the search
+pattern.
+.SS "Output when no messages are matched"
+If
+.B pick
+is used in a backquoted 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.
+.SH FILES
+.fc ^ ~
+.nf
+.ta \w'%nmhetcdir%/ExtraBigFileName  'u

 ^$HOME/\&.mh\(ruprofile~^The user profile
 ^$HOME/\&.mh\(ruprofile~^The user profile

-.Pr
+.fi
+.SH "PROFILE COMPONENTS"
+.fc ^ ~
+.nf
+.ta 2.4i
+.ta \w'ExtraBigProfileName  'u

 ^Path:~^To determine the user's nmh directory
 ^Path:~^To determine the user's nmh directory

-.Ps

 ^Current\-Folder:~^To find the default current folder
 ^Current\-Folder:~^To find the default current folder

-.Sa
-mark(1)
-.De
-`+folder' defaults to the current folder
-.Ds
-`msgs' defaults to all
-.Ds
-`\-datefield date'
-.Ds
-`\-zero'
-.Ds
-`\-list' is the default if no `\-sequence', `\-nolist' otherwise
-.Co
+.fi
+.SH "SEE ALSO"
+.IR 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.
 If a folder is given, it will become the current folder.

-.Hi
-In previous versions of \fIMH\fR, the \fIpick\fR command would \fIshow\fR,
-\fIscan\fR, or \fIrefile\fR the selected messages.  This was rather
-\*(lqinverted logic\*(rq from the UNIX point of view, so \fIpick\fR was
-changed to define sequences and output those sequences.  Hence, \fIpick\fR
-can be used to generate the arguments for all other \fIMH\fR commands,
-instead of giving \fIpick\fR endless switches for invoking those commands
+.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.
 itself.

-
-Also, previous versions of \fIpick\fR balked if you didn't specify
+.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:
 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:

-
-.ti +.5i
+.PP
+.RS 5

 show\0`pick\0last:20\0\-seq\0fear`
 show\0`pick\0last:20\0\-seq\0fear`

-
+.RE
+.PP

 instead of typing
 instead of typing

-
-.in +.5i
+.PP
+.RS 5

 .nf
 mark\0\-add\0\-nozero\0\-seq\0fear\0last:20
 show\0fear
 .fi
 .nf
 mark\0\-add\0\-nozero\0\-seq\0fear\0last:20
 show\0fear
 .fi

-.in -.5i
-
+.RE
+.PP

 Finally, timezones used to be ignored when comparing dates: they aren't
 any more.
 Finally, timezones used to be ignored when comparing dates: they aren't
 any more.

-.Hh
-Use \*(lqpick sequence \-list\*(rq to enumerate the messages in a sequence
+.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).
 (such as for use by a shell script).

-.Bu
-The argument to the `\-after' and `\-before' switches must be interpreted
-as a single token by the shell that invokes \fIpick\fR.  Therefore, one
-must usually place the argument to this switch inside double\-quotes.
-Furthermore, any occurrence of `\-datefield' must occur prior to the
-`\-after' or `\-before' switch it applies to.
-
-If \fIpick\fR is used in a back\-quoted operation, such as
-
-.ti +.5i
-scan\0`pick\0\-from\0jones`
-
-and \fIpick\fR selects no messages (e.g., no messages are from
-\*(lqjones\*(rq), then the shell will still run the outer command (e.g.,
-\*(lqscan\*(rq).  Since no messages were matched, \fIpick\fR produced
-no output, and the argument given to the outer command as a result of
-backquoting \fIpick\fR is empty.  In the case of \fInmh\fR programs,
-the outer command now acts as if the default `msg' or `msgs' should be
-used (e.g., \*(lqall\*(rq in the case of \fIscan\fR\0).  To prevent this
-unexpected behavior, if `\-list' was given, and if its standard output is
-not a tty, then \fIpick\fR outputs the illegal message number \*(lq0\*(rq
-when it fails.  This lets the outer command fail gracefully as well.
-
-.sp
+.SH BUGS
+Any occurrence of
+.B \-datefield
+must occur prior to the
+.B \-after
+or
+.B \-before
+switch it applies to.
+.PP

 The pattern syntax \*(lq[l-r]\*(rq is not supported; each letter to be
 matched must be included within the square brackets.
 The pattern syntax \*(lq[l-r]\*(rq is not supported; each letter to be
 matched must be included within the square brackets.

-.En