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- info option ?arg arg ...?
- Provide information about various internals to 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.
-
- 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. 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 library 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 $app_library (where app is the
- application's name) to hold the location of that
- application's library directory.
-
- 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 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 version number for this version of Tcl
- in the form x.y, where changes to x represent
- major changes with probable incompatibilities and
- changes to y represent small enhancements and bug
- fixes that retain backward compatibility.
-
- info vars ?pattern?
- If pattern isn't specified, returns a list of all
- the names of currently-visible variables,
- including both locals and currently-visible
- globals. If pattern is specified, only those
- names matching pattern are returned. Matching is
- determined using the same rules as for string
- match.
-