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author | William Joye <wjoye@cfa.harvard.edu> | 2017-09-22 18:57:19 (GMT) |
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committer | William Joye <wjoye@cfa.harvard.edu> | 2017-09-22 18:57:19 (GMT) |
commit | 2aff4a96fa0286d875bddec0019648e2c6431cbc (patch) | |
tree | f7a9a4800a3f3ad4b77470b8383529176d8b7181 /tcl8.6/doc/RecEvalObj.3 | |
parent | 3fa8e6dc88e8041b6cb88d1b1e9c05676d3346b7 (diff) | |
parent | 29ccecd87709feda60d191f6aaba324ccad91f55 (diff) | |
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Merge commit '29ccecd87709feda60d191f6aaba324ccad91f55' as 'tcl8.6'
Diffstat (limited to 'tcl8.6/doc/RecEvalObj.3')
-rw-r--r-- | tcl8.6/doc/RecEvalObj.3 | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/tcl8.6/doc/RecEvalObj.3 b/tcl8.6/doc/RecEvalObj.3 new file mode 100644 index 0000000..387cc44 --- /dev/null +++ b/tcl8.6/doc/RecEvalObj.3 @@ -0,0 +1,53 @@ +'\" +'\" Copyright (c) 1997 Sun Microsystems, Inc. +'\" +'\" See the file "license.terms" for information on usage and redistribution +'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. +'\" +.TH Tcl_RecordAndEvalObj 3 8.0 Tcl "Tcl Library Procedures" +.so man.macros +.BS +.SH NAME +Tcl_RecordAndEvalObj \- save command on history list before evaluating +.SH SYNOPSIS +.nf +\fB#include <tcl.h>\fR +.sp +int +\fBTcl_RecordAndEvalObj\fR(\fIinterp, cmdPtr, flags\fR) +.SH ARGUMENTS +.AS Tcl_Interp *interp +.AP Tcl_Interp *interp in +Tcl interpreter in which to evaluate command. +.AP Tcl_Obj *cmdPtr in +Points to a Tcl value containing a command (or sequence of commands) +to execute. +.AP int flags in +An OR'ed combination of flag bits. \fBTCL_NO_EVAL\fR means record the +command but do not evaluate it. \fBTCL_EVAL_GLOBAL\fR means evaluate +the command at global level instead of the current stack level. +.BE + +.SH DESCRIPTION +.PP +\fBTcl_RecordAndEvalObj\fR is invoked to record a command as an event +on the history list and then execute it using \fBTcl_EvalObjEx\fR +(or \fBTcl_GlobalEvalObj\fR if the \fBTCL_EVAL_GLOBAL\fR bit is set +in \fIflags\fR). +It returns a completion code such as \fBTCL_OK\fR just like \fBTcl_EvalObjEx\fR, +as well as a result value containing additional information +(a result value or error message) +that can be retrieved using \fBTcl_GetObjResult\fR. +If you do not want the command recorded on the history list then +you should invoke \fBTcl_EvalObjEx\fR instead of \fBTcl_RecordAndEvalObj\fR. +Normally \fBTcl_RecordAndEvalObj\fR 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 \fIflags\fR argument contains the \fBTCL_NO_EVAL\fR bit then +the command is recorded without being evaluated. + +.SH "SEE ALSO" +Tcl_EvalObjEx, Tcl_GetObjResult + +.SH KEYWORDS +command, event, execute, history, interpreter, value, record |