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- '\"
- '\" Copyright (c) 1993 The Regents of the University of California.
- '\" All rights reserved.
- '\"
- '\" Permission is hereby granted, without written agreement and without
- '\" license or royalty fees, to use, copy, modify, and distribute this
- '\" documentation for any purpose, provided that the above copyright
- '\" notice and the following two paragraphs appear in all copies.
- '\"
- '\" IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
- '\" FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
- '\" ARISING OUT OF THE USE OF THIS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
- '\" CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- '\"
- '\" THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
- '\" INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- '\" AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
- '\" ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
- '\" PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
- '\"
- '\" $Header: /user6/ouster/tcl/man/RCS/info.n,v 1.2 93/06/18 13:58:33 ouster Exp $ SPRITE (Berkeley)
- '\"
- .\" The definitions below are for supplemental macros used in Tcl/Tk
- .\" manual entries.
- .\"
- .\" .HS name section [date [version]]
- .\" Replacement for .TH in other man pages. See below for valid
- .\" section names.
- .\"
- .\" .AP type name in/out [indent]
- .\" Start paragraph describing an argument to a library procedure.
- .\" type is type of argument (int, etc.), in/out is either "in", "out",
- .\" or "in/out" to describe whether procedure reads or modifies arg,
- .\" and indent is equivalent to second arg of .IP (shouldn't ever be
- .\" needed; use .AS below instead)
- .\"
- .\" .AS [type [name]]
- .\" Give maximum sizes of arguments for setting tab stops. Type and
- .\" name are examples of largest possible arguments that will be passed
- .\" to .AP later. If args are omitted, default tab stops are used.
- .\"
- .\" .BS
- .\" Start box enclosure. From here until next .BE, everything will be
- .\" enclosed in one large box.
- .\"
- .\" .BE
- .\" End of box enclosure.
- .\"
- .\" .VS
- .\" Begin vertical sidebar, for use in marking newly-changed parts
- .\" of man pages.
- .\"
- .\" .VE
- .\" End of vertical sidebar.
- .\"
- .\" .DS
- .\" Begin an indented unfilled display.
- .\"
- .\" .DE
- .\" End of indented unfilled display.
- .\"
- '\" # Heading for Tcl/Tk man pages
- .de HS
- .ds ^3 \\0
- .if !"\\$3"" .ds ^3 \\$3
- .if '\\$2'cmds' .TH \\$1 1 \\*(^3 \\$4
- .if '\\$2'lib' .TH \\$1 3 \\*(^3 \\$4
- .if '\\$2'tcl' .TH \\$1 n \\*(^3 Tcl "Tcl Built-In Commands"
- .if '\\$2'tk' .TH \\$1 n \\*(^3 Tk "Tk Commands"
- .if '\\$2'tclc' .TH \\$1 3 \\*(^3 Tcl "Tcl Library Procedures"
- .if '\\$2'tkc' .TH \\$1 3 \\*(^3 Tk "Tk Library Procedures"
- .if '\\$2'tclcmds' .TH \\$1 1 \\*(^3 Tk "Tcl Applications"
- .if '\\$2'tkcmds' .TH \\$1 1 \\*(^3 Tk "Tk Applications"
- .if t .wh -1.3i ^B
- .nr ^l \\n(.l
- .ad b
- ..
- '\" # Start an argument description
- .de AP
- .ie !"\\$4"" .TP \\$4
- .el \{\
- . ie !"\\$2"" .TP \\n()Cu
- . el .TP 15
- .\}
- .ie !"\\$3"" \{\
- .ta \\n()Au \\n()Bu
- \&\\$1 \\fI\\$2\\fP (\\$3)
- .\".b
- .\}
- .el \{\
- .br
- .ie !"\\$2"" \{\
- \&\\$1 \\fI\\$2\\fP
- .\}
- .el \{\
- \&\\fI\\$1\\fP
- .\}
- .\}
- ..
- '\" # define tabbing values for .AP
- .de AS
- .nr )A 10n
- .if !"\\$1"" .nr )A \\w'\\$1'u+3n
- .nr )B \\n()Au+15n
- .\"
- .if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n
- .nr )C \\n()Bu+\\w'(in/out)'u+2n
- ..
- '\" # BS - start boxed text
- '\" # ^y = starting y location
- '\" # ^b = 1
- .de BS
- .br
- .mk ^y
- .nr ^b 1u
- .if n .nf
- .if n .ti 0
- .if n \l'\\n(.lu\(ul'
- .if n .fi
- ..
- '\" # BE - end boxed text (draw box now)
- .de BE
- .nf
- .ti 0
- .mk ^t
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- .\" Draw four-sided box normally, but don't draw top of
- .\" box if the box started on an earlier page.
- .ie !\\n(^b-1 \{\
- \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
- .\}
- .el \}\
- \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
- .\}
- .\}
- .fi
- .br
- .nr ^b 0
- ..
- '\" # VS - start vertical sidebar
- '\" # ^Y = starting y location
- '\" # ^v = 1 (for troff; for nroff this doesn't matter)
- .de VS
- .mk ^Y
- .ie n 'mc \s12\(br\s0
- .el .nr ^v 1u
- ..
- '\" # VE - end of vertical sidebar
- .de VE
- .ie n 'mc
- .el \{\
- .ev 2
- .nf
- .ti 0
- .mk ^t
- \h'|\\n(^lu+3n'\L'|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-|\\n(^lu+3n'
- .sp -1
- .fi
- .ev
- .\}
- .nr ^v 0
- ..
- '\" # Special macro to handle page bottom: finish off current
- '\" # box/sidebar if in box/sidebar mode, then invoked standard
- '\" # page bottom macro.
- .de ^B
- .ev 2
- 'ti 0
- 'nf
- .mk ^t
- .if \\n(^b \{\
- .\" Draw three-sided box if this is the box's first page,
- .\" draw two sides but no top otherwise.
- .ie !\\n(^b-1 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c
- .el \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c
- .\}
- .if \\n(^v \{\
- .nr ^x \\n(^tu+1v-\\n(^Yu
- \kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c
- .\}
- .bp
- 'fi
- .ev
- .if \\n(^b \{\
- .mk ^y
- .nr ^b 2
- .\}
- .if \\n(^v \{\
- .mk ^Y
- .\}
- ..
- '\" # DS - begin display
- .de DS
- .RS
- .nf
- .sp
- ..
- '\" # DE - end display
- .de DE
- .fi
- .RE
- .sp .5
- ..
- .HS info tcl 7.0
- .BS
- '\" Note: do not modify the .SH NAME line immediately below!
- .SH NAME
- info \- Return information about the state of the Tcl interpreter
- .SH SYNOPSIS
- \fBinfo \fIoption \fR?\fIarg arg ...\fR?
- .BE
-
- .SH DESCRIPTION
- .PP
- This command provides information about various internals of the Tcl
- interpreter.
- The legal \fIoption\fR's (which may be abbreviated) are:
- .TP
- \fBinfo args \fIprocname\fR
- Returns a list containing the names of the arguments to procedure
- \fIprocname\fR, in order. \fIProcname\fR must be the name of a
- Tcl command procedure.
- .TP
- \fBinfo body \fIprocname\fR
- Returns the body of procedure \fIprocname\fR. \fIProcname\fR must be
- the name of a Tcl command procedure.
- .TP
- \fBinfo cmdcount\fR
- Returns a count of the total number of commands that have been invoked
- in this interpreter.
- .TP
- \fBinfo commands \fR?\fIpattern\fR?
- If \fIpattern\fR isn't specified, returns a list of names of all the
- Tcl commands, including both the built-in commands written in C and
- the command procedures defined using the \fBproc\fR command.
- If \fIpattern\fR is specified, only those names matching \fIpattern\fR
- are returned. Matching is determined using the same rules as for
- \fBstring match\fR.
- .TP
- \fBinfo complete \fIcommand\fR
- Returns 1 if \fIcommand\fR is a complete Tcl command in the sense of
- having no unclosed quotes, braces, brackets or array element names,
- If the command doesn't appear to be complete then 0 is returned.
- This command is typically used in line-oriented input environments
- to allow users to type in commands that span multiple lines; if the
- command isn't complete, the script can delay evaluating it until additional
- lines have been typed to complete the command.
- .TP
- \fBinfo default \fIprocname arg varname\fR
- \fIProcname\fR must be the name of a Tcl command procedure and \fIarg\fR
- must be the name of an argument to that procedure. If \fIarg\fR
- doesn't have a default value then the command returns \fB0\fR.
- Otherwise it returns \fB1\fR and places the default value of \fIarg\fR
- into variable \fIvarname\fR.
- .TP
- \fBinfo exists \fIvarName\fR
- Returns \fB1\fR if the variable named \fIvarName\fR exists in the
- current context (either as a global or local variable), returns \fB0\fR
- otherwise.
- .TP
- \fBinfo globals \fR?\fIpattern\fR?
- If \fIpattern\fR isn't specified, returns a list of all the names
- of currently-defined global variables.
- If \fIpattern\fR is specified, only those names matching \fIpattern\fR
- are returned. Matching is determined using the same rules as for
- \fBstring match\fR.
- .TP
- \fBinfo level\fR ?\fInumber\fR?
- If \fInumber\fR is not specified, this command returns a number
- giving the stack level of the invoking procedure, or 0 if the
- command is invoked at top-level. If \fInumber\fR is specified,
- then the result is a list consisting of the name and arguments for the
- procedure call at level \fInumber\fR on the stack. If \fInumber\fR
- is positive then it selects a particular stack level (1 refers
- to the top-most active procedure, 2 to the procedure it called, and
- so on); otherwise it gives a level relative to the current level
- (0 refers to the current procedure, -1 to its caller, and so on).
- See the \fBuplevel\fR command for more information on what stack
- levels mean.
- .TP
- \fBinfo library\fR
- Returns the name of the library directory in which standard Tcl
- scripts are stored.
- The default value for the library is compiled into Tcl, but it
- may be overridden by setting the TCL_LIBRARY environment variable.
- If there is no TCL_LIBRARY variable and no compiled-in value then
- and error is generated.
- See the \fBlibrary\fR manual entry for details of the facilities
- provided by the Tcl script library.
- Normally each application will have its own application-specific
- script library in addition to the Tcl script library; I suggest that
- each application set a global variable with a name like
- \fB$\fIapp\fB_library\fR (where \fIapp\fR is the application's name)
- to hold the location of that application's library directory.
- .TP
- \fBinfo locals \fR?\fIpattern\fR?
- If \fIpattern\fR isn't specified, returns a list of all the names
- of currently-defined local variables, including arguments to the
- current procedure, if any.
- Variables defined with the \fBglobal\fR and \fBupvar\fR commands
- will not be returned.
- If \fIpattern\fR is specified, only those names matching \fIpattern\fR
- are returned. Matching is determined using the same rules as for
- \fBstring match\fR.
- .TP
- \fBinfo patchlevel\fR
- .VS
- Returns a decimal integer giving the current patch level for Tcl.
- The patch level is incremented for each new release or patch, and
- it uniquely identifies an official version of Tcl.
- .VE
- .TP
- \fBinfo procs \fR?\fIpattern\fR?
- If \fIpattern\fR isn't specified, returns a list of all the
- names of Tcl command procedures.
- If \fIpattern\fR is specified, only those names matching \fIpattern\fR
- are returned. Matching is determined using the same rules as for
- \fBstring match\fR.
- .TP
- \fBinfo script\fR
- If a Tcl script file is currently being evaluated (i.e. there is a
- call to \fBTcl_EvalFile\fR active or there is an active invocation
- of the \fBsource\fR command), then this command returns the name
- of the innermost file being processed. Otherwise the command returns an
- empty string.
- .TP
- \fBinfo tclversion\fR
- Returns the version number for this version of Tcl in the form \fIx.y\fR,
- where changes to \fIx\fR represent major changes with probable
- incompatibilities and changes to \fIy\fR represent small enhancements and
- bug fixes that retain backward compatibility.
- .TP
- \fBinfo vars\fR ?\fIpattern\fR?
- If \fIpattern\fR isn't specified,
- returns a list of all the names of currently-visible variables, including
- both locals and currently-visible globals.
- If \fIpattern\fR is specified, only those names matching \fIpattern\fR
- are returned. Matching is determined using the same rules as for
- \fBstring match\fR.
-
- .SH KEYWORDS
- command, information, interpreter, level, procedure, variable
-