tcldoc Tcl/Tk 9.0.4
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Tcl_RecordAndEval C API

Save command on history list before evaluating

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Synopsis#

#include <tcl.h>

int Tcl_RecordAndEval(interp, cmd, flags)#

Arguments#

Tcl_Interp *interp (in)

Tcl interpreter in which to evaluate command.

const char *cmd (in)

Command (or sequence of commands) to execute.

int flags (in)

An OR'ed combination of flag bits. TCL_NO_EVAL means record the command but do not evaluate it. TCL_EVAL_GLOBAL means evaluate the command at global level instead of the current stack level.

Description#

Tcl_RecordAndEval is invoked to record a command as an event on the history list and then execute it using Tcl_Eval (or Tcl_GlobalEval if the TCL_EVAL_GLOBAL bit is set in flags). It returns a completion code such as TCL_OK just like Tcl_Eval and it leaves information in the interpreter's result. If you do not want the command recorded on the history list then you should invoke Tcl_Eval instead of Tcl_RecordAndEval. Normally Tcl_RecordAndEval is only called with top-level commands typed by the user, since the purpose of history is to allow the user to re-issue recently-invoked commands. If the flags argument contains the TCL_NO_EVAL bit then the command is recorded without being evaluated.

Note that Tcl_RecordAndEval has been largely replaced by the value-based procedure Tcl_RecordAndEvalObj. That value-based procedure records and optionally executes a command held in a Tcl value instead of a string.

See also#

Keywords#

command · event · execute · history · interpreter · record

Copyright#