'\"
'\" Generated from file 'cmdr_history\&.man' by tcllib/doctools with format 'nroff'
'\" Copyright (c) 2013-2016 Andreas Kupries
'\" Copyright (c) 2013-2016 Documentation, Andreas Kupries
'\"
.TH "cmdr::history" n 0\&.1 doc "Cmdr, a framework for command line parsing and dispatch"
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.BS
.SH NAME
cmdr::history \- Cmdr - Utilities for history management
.SH SYNOPSIS
package require \fBfileutil \fR
.sp
package require \fBcmdr::history \fR
.sp
\fB::cmdr::history\fR \fBattach\fR \fIactor\fR
.sp
\fB::cmdr::history\fR \fBsave-to\fR \fIpath\fR
.sp
\fB::cmdr::history\fR \fBinitial-limit\fR \fIlimit\fR
.sp
.BE
.SH DESCRIPTION
.PP
Welcome to the Cmdr project, written by Andreas Kupries\&.
.PP
For availability please read \fICmdr - How To Get The Sources\fR\&.
.PP
This package provides utility commands to manage a command history\&.
.SH API
.TP
\fB::cmdr::history\fR \fBattach\fR \fIactor\fR
When invoked this command extends the \fIactor\fR instance
(an officer) with the necessary commands (a \fBhistory\fR officer) and
settings to record a history of commands entered for this actor and
its subordinate commands, and allow the user to manage this history\&.
.sp
The result of the command is the empty string\&.
.RS
.TP
cmdr::officer \fIactor\fR
The officer to extend with history
management commands\&.
.RE
.IP
After attachment the actor will accept the following 3 commands:
.CS


    history list ?n?  - Show last n history entries\&. Defaults to all\&.
    history clear     - Drop all history entries
    history limit ?n? - Limit history to 'n' entries (n >= 0)\&. Unlimited for n < 0\&.

.CE
.IP
Under most circumstances the attachment is handled through the
method \fBcustom-setup\fR of officers\&. See \fBcmdr::officer\fR, and
the \fBExample\fR for more information\&.
.TP
\fB::cmdr::history\fR \fBsave-to\fR \fIpath\fR
When invoked this command sets the package-wide history save file used
by the commands to the \fIpath\fR\&.
.sp
The result of the command is the empty string\&.
.TP
\fB::cmdr::history\fR \fBinitial-limit\fR \fIlimit\fR
When invoked this command sets the package-wide limit on history size
to \fIlimit\fR\&. A value less than zero means "no limit"\&.
.sp
The result of the command is the empty string\&.
.PP
.SH EXAMPLE
Below an example on how to activate history for an officer\&.
The example was taken from the \fBfx\fR application extending the
\fBfossil\fR DVCS\&.
.CS


cmdr history initial-limit 20
cmdr history save-to       ~/\&.fx_history

cmdr create fx::fx [file tail $::argv0] {
    custom-setup ::cmdr::history::attach

    [\&.\&.\&.]
}

.CE
.SH "BUGS, IDEAS, FEEDBACK"
Both the package(s) and this documentation will undoubtedly contain
bugs and other problems\&.
Please report such at
\fICmdr Tickets\fR [https:/core\&.tcl\&.tk/akupries/cmdr]\&.
.PP
Please also report any ideas you may have for enhancements of
either package(s) and/or documentation\&.
.SH KEYWORDS
arguments, command hierarchy, command line completion, command line handling, command tree, editing command line, help for command line, hierarchy of commands, interactive command shell, optional arguments, options, parameters, processing command line, tree of commands
.SH COPYRIGHT
.nf
Copyright (c) 2013-2016 Andreas Kupries
Copyright (c) 2013-2016 Documentation, Andreas Kupries

.fi