info(3Tcl) info(3Tcl)
info - Return information about the state of the Tcl interpreter
info option ?arg arg ...?
This command provides information about various internals of the Tcl
interpreter. The legal option's (which may be abbreviated) are:
info args procname
Returns a list containing the names of the arguments to procedure
procname, in order. Procname must be the name of a Tcl command
procedure.
info body procname
Returns the body of procedure procname. Procname must be the name
of a Tcl command procedure.
info cmdcount
Returns a count of the total number of commands that have been
invoked in this interpreter.
info commands ?pattern?
If pattern 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 proc command. If pattern is
specified, only those names matching pattern are returned. Matching
is determined using the same rules as for string match.
info complete command
Returns 1 if command 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.
info default procname arg varname
Procname must be the name of a Tcl command procedure and arg must be
the name of an argument to that procedure. If arg doesn't have a
default value then the command returns 0. Otherwise it returns 1
and places the default value of arg into variable varname.
info exists varName
Returns 1 if the variable named varName exists in the current
context (either as a global or local variable), returns 0 otherwise.
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info(3Tcl) info(3Tcl)
info globals ?pattern?
If pattern isn't specified, returns a list of all the names of
currently-defined global variables. If pattern is specified, only
those names matching pattern are returned. Matching is determined
using the same rules as for string match.
info level ?number?
If number 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 number is specified, then the result is a
list consisting of the name and arguments for the procedure call at
level number on the stack. If number 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 uplevel command for more
information on what stack levels mean.
info library
Returns the name of the library directory in which standard Tcl
scripts are stored. This is actually the value of the tcl_library |
variable and may be changed by setting tcl_library. See the tclvars|
manual entry for more information.
info locals ?pattern?
If pattern 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 global and
upvar commands will not be returned. If pattern is specified, only
those names matching pattern are returned. Matching is determined
using the same rules as for string match.
info patchlevel
Returns the value of the global variable tcl_patchLevel; see the |
tclvars manual entry for more information.
info procs ?pattern?
If pattern isn't specified, returns a list of all the names of Tcl
command procedures. If pattern is specified, only those names
matching pattern are returned. Matching is determined using the
same rules as for string match.
info script
If a Tcl script file is currently being evaluated (i.e. there is a
call to Tcl_EvalFile active or there is an active invocation of the
source command), then this command returns the name of the innermost
file being processed. Otherwise the command returns an empty
string.
info tclversion
Returns the value of the global variable tcl_version; see the |
tclvars manual entry for more information.
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info(3Tcl) info(3Tcl)
info vars ?pattern?
If pattern isn't specified, returns a list of all the names of
currently-visible variables, including both locals and currentlyvisible
globals. If pattern is specified, only those names matching
pattern are returned. Matching is determined using the same rules
as for string match.
command, information, interpreter, level, procedure, variable
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