merge 8.7

6 files changed, 133 insertions, 192 deletions

diff --git a/doc/Eval.3 b/doc/Eval.3
index 191bace..e241794 100644
--- a/doc/Eval.3
+++ b/doc/Eval.3
@@ -176,10 +176,10 @@ it is faster to execute the script directly.
 .TP 23
 \fBTCL_EVAL_GLOBAL\fR
 .
-If this flag is set, the script is processed at global level.  This
-means that it is evaluated in the global namespace and its variable
-context consists of global variables only (it ignores any Tcl
-procedures that are active).
+If this flag is set, the script is evaluated in the global namespace instead of
+the current namespace and its variable context consists of global variables
+only (it ignores any Tcl procedures that are active).
+.\" TODO: document TCL_EVAL_INVOKE and TCL_EVAL_NOERR.
 
 .SH "MISCELLANEOUS DETAILS"
 .PP
diff --git a/doc/IntObj.3 b/doc/IntObj.3
index 2acb446..6d5ee69 100644
--- a/doc/IntObj.3
+++ b/doc/IntObj.3
@@ -97,7 +97,7 @@ are provided by the C language standard.  The \fBTcl_WideInt\fR type is a
 typedef defined to be whatever signed integral type covers at least the
 64-bit integer range (-9223372036854775808 to 9223372036854775807).  Depending
 on the platform and the C compiler, the actual type might be
-\fBlong int\fR, \fBlong long int\fR, \fB__int64\fR, or something else.
+\fBlong long int\fR, \fB__int64\fR, or something else.
 The \fBmp_int\fR type is a multiple-precision integer type defined
 by the LibTomMath multiple-precision integer library.
 .PP
diff --git a/doc/Interp.3 b/doc/Interp.3
index 731007b..4ccff21 100644
--- a/doc/Interp.3
+++ b/doc/Interp.3
@@ -101,7 +101,7 @@ the command.  The \fIfreeProc\fR field will be initialized to zero,
 and \fIinterp->result\fR will point to an empty string.  Commands that
 do not return any value can simply leave the fields alone.
 Furthermore, the empty string pointed to by \fIresult\fR is actually
-part of an array of \fBTCL_RESULT_SIZE\fR characters (approximately 200).
+part of an array of approximately 200 characters.
 If a command wishes to return a short string, it can simply copy
 it to the area pointed to by \fIinterp->result\fR.  Or, it can use
 the sprintf procedure to generate a short result string at the location
diff --git a/doc/NRE.3 b/doc/NRE.3
index ff0d108..6078a53 100644
--- a/doc/NRE.3
+++ b/doc/NRE.3
@@ -1,5 +1,6 @@
 .\"
 .\" Copyright (c) 2008 by Kevin B. Kenny.
+.\" Copyright (c) 2018 by Nathan Coulter. 
 .\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -38,43 +39,39 @@ void
 .SH ARGUMENTS
 .AS Tcl_CmdDeleteProc *interp in
 .AP Tcl_Interp *interp in
-Interpreter in which to create or evaluate a command.
+The relevant Interpreter.
 .AP char *cmdName in
-Name of a new command to create.
+Name of the command to create.
 .AP Tcl_ObjCmdProc *proc in
-Implementation of a command that will be called whenever \fIcmdName\fR
-is invoked as a command in the unoptimized way.
+Called in order to evaluate a command.  Is often just a small wrapper that uses
+\fBTcl_NRCallObjProc\fR to call \fInreProc\fR using a new trampoline.  Behaves
+in the same way as the \fIproc\fR argument to \fBTcl_CreateObjCommand\fR(3)
+(\fIq.v.\fR).
 .AP Tcl_ObjCmdProc *nreProc in
-Implementation of a command that will be called whenever \fIcmdName\fR
-is invoked and requested to conserve the C stack.
+Called instead of \fIproc\fR when a trampoline is already in use.
 .AP ClientData clientData in
-Arbitrary one-word value that will be passed to \fIproc\fR, \fInreProc\fR,
-\fIdeleteProc\fR and \fIobjProc\fR.
+Arbitrary one-word value passed to \fIproc\fR, \fInreProc\fR, \fIdeleteProc\fR
+and \fIobjProc\fR.
 .AP Tcl_CmdDeleteProc *deleteProc in/out
-Procedure to call before \fIcmdName\fR is deleted from the interpreter.
-This procedure allows for command-specific cleanup. If \fIdeleteProc\fR
-is \fBNULL\fR, then no procedure is called before the command is deleted.
+Called before \fIcmdName\fR is deleted from the interpreter, allowing for
+command-specific cleanup. May be NULL.
 .AP int objc in
-Count of parameters provided to the implementation of a command.
+Number of items in \fIobjv\fR.
 .AP Tcl_Obj **objv in
-Pointer to an array of Tcl values. Each value holds the value of a
-single word in the command to execute.
+Words in the command.
 .AP Tcl_Obj *objPtr in
-Pointer to a Tcl_Obj whose value is a script or expression to execute.
+A script or expression to evaluate.
 .AP int flags in
-ORed combination of flag bits that specify additional options.
-\fBTCL_EVAL_GLOBAL\fR is the only flag that is currently supported.
-.\" TODO: This is a lie. But kbk didn't grasp TCL_EVAL_INVOKE and
-.\"       TCL_EVAL_NOERR well enough to document them.
+As described for \fITcl_EvalObjv\fR.
+.PP
 .AP Tcl_Command cmd in
-Token for a command that is to be used instead of the currently
-executing command.
+Token to use instead of one derived from the first word of \fIobjv\fR in order
+to evaluate a command.
 .AP Tcl_Obj *resultPtr out
-Pointer to an unshared Tcl_Obj where the result of expression
-evaluation is written.
+Pointer to an unshared Tcl_Obj where the result of the evaluation is stored if
+the return code is TCL_OK.
 .AP Tcl_NRPostProc *postProcPtr in
-Pointer to a function that will be invoked when the command currently
-executing in the interpreter designated by \fIinterp\fR completes.
+A function to push.
 .AP ClientData data0 in
 .AP ClientData data1 in
 .AP ClientData data2 in
@@ -84,98 +81,51 @@ to the function designated by \fIpostProcPtr\fR when it is invoked.
 .BE
 .SH DESCRIPTION
 .PP
-This series of C functions provides an interface whereby commands that
-are implemented in C can be evaluated, and invoke Tcl commands scripts
-and scripts, without consuming space on the C stack. The non-recursive
-evaluation is done by installing a \fItrampoline\fR, a small piece of
-code that invokes a command or script, and then executes a series of
-callbacks when the command or script returns.
-.PP
-The \fBTcl_NRCreateCommand\fR function creates a Tcl command in the
-interpreter designated by \fIinterp\fR that is prepared to handle
-nonrecursive evaluation with a trampoline. The \fIcmdName\fR argument
-gives the name of the new command. If \fIcmdName\fR contains any
-namespace qualifiers, then the new command is added to the specified
-namespace; otherwise, it is added to the global namespace. \fIproc\fR
-gives the procedure that will be called when the interpreter wishes to
-evaluate the command in an unoptimized manner, and \fInreProc\fR is
-the procedure that will be called when the interpreter wishes to
-evaluate the command using a trampoline. \fIdeleteProc\fR is a
-function that will be called before the command is deleted from the
-interpreter. When any of the three functions is invoked, it is passed
-the \fIclientData\fR parameter.
-.PP
-\fBTcl_NRCreateCommand\fR deletes any existing command
-\fIname\fR already associated with the interpreter
-(however see below for an exception where the existing command
-is not deleted).
-It returns a token that may be used to refer
-to the command in subsequent calls to \fBTcl_GetCommandName\fR.
-If \fBTcl_NRCreateCommand\fR is called for an interpreter that is in
-the process of being deleted, then it does not create a new command,
-does not delete any existing command of the same name, and returns NULL.
-.PP
-The \fIproc\fR and \fInreProc\fR function are expected to conform to
-all the rules set forth for the \fIproc\fR argument to
-\fBTcl_CreateObjCommand\fR(3) (\fIq.v.\fR).
-.PP
-When a command that is written to cope with evaluation via trampoline
-is invoked without a trampoline on the stack, it will usually respond
-to the invocation by creating a trampoline and calling the
-trampoline-enabled implementation of the same command. This call is done by
-means of \fBTcl_NRCallObjProc\fR. In the call to
-\fBTcl_NRCallObjProc\fR, the \fIinterp\fR, \fIclientData\fR,
-\fIobjc\fR and \fIobjv\fR parameters should be the same ones that were
-passed to \fIproc\fR. The \fInreProc\fR parameter should designate the
-trampoline-enabled implementation of the command.
-.PP
-\fBTcl_NREvalObj\fR arranges for the script contained in \fIobjPtr\fR
-to be evaluated in the interpreter designated by \fIinterp\fR after
-the current command (which must be trampoline-enabled) returns. It is
-the method by which a command may invoke a script without consuming
-space on the C stack. Similarly, \fBTcl_NREvalObjv\fR arranges to
-invoke a single Tcl command whose words have already been separated
-and substituted. The \fIobjc\fR and \fIobjv\fR parameters give the
-words of the command to be evaluated when execution reaches the
-trampoline.
-.PP
-\fBTcl_NRCmdSwap\fR allows for trampoline evaluation of a command whose
-resolution is already known.  The \fIcmd\fR parameter gives a
-\fBTcl_Command\fR token (returned from \fBTcl_CreateObjCommand\fR or
-\fBTcl_GetCommandFromObj\fR) identifying the command to be invoked in
-the trampoline; this command must match the word in \fIobjv[0]\fR.
-The remaining arguments are as for \fBTcl_NREvalObjv\fR.
-.PP
-\fBTcl_NREvalObj\fR, \fBTcl_NREvalObjv\fR and \fBTcl_NRCmdSwap\fR
-all accept a \fIflags\fR parameter, which is an OR-ed-together set of
-bits to control evaluation. At the present time, the only supported flag
-available to callers is \fBTCL_EVAL_GLOBAL\fR.
-.\" TODO: Again, this is a lie. Do we want to explain TCL_EVAL_INVOKE
-.\"       and TCL_EVAL_NOERR?
-If the \fBTCL_EVAL_GLOBAL\fR flag is set, the script or command is
-evaluated in the global namespace. If it is not set, it is evaluated
-in the current namespace.
-.PP
-\fBTcl_NRExprObj\fR arranges for the expression contained in \fIobjPtr\fR
-to be evaluated in the interpreter designated by \fIinterp\fR after
-the current command (which must be trampoline-enabled) returns. It is
-the method by which a command may evaluate a Tcl expression without consuming
-space on the C stack.  The argument \fIresultPtr\fR is a pointer to an
-unshared Tcl_Obj where the result of expression evaluation is to be written.
-If expression evaluation returns any code other than TCL_OK, the
-\fIresultPtr\fR value is left untouched.
-.PP
-All of the routines return \fBTCL_OK\fR if command or expression invocation
-has been scheduled successfully. If for any reason the scheduling cannot
-be completed (for example, if the interpreter is unable to find
-the requested command), they return \fBTCL_ERROR\fR with an
-appropriate message left in the interpreter's result.
-.PP
-\fBTcl_NRAddCallback\fR arranges to have a C function called when the
-current trampoline-enabled command in the Tcl interpreter designated
-by \fIinterp\fR returns.  The \fIpostProcPtr\fR argument is a pointer
-to the callback function, which must have arguments and return value
-consistent with the \fBTcl_NRPostProc\fR data type:
+These functions provide an interface to the function stack that an interpreter
+iterates through to evaluate commands.  The routine behind a command is
+implemented by an initial function and any additional functions that the
+routine pushes onto the stack as it progresses.  The interpreter itself pushes
+functions onto the stack to react to the end of a routine and to exercise other
+forms of control such as switching between in-progress stacks and the
+evaluation of other scripts at additional levels without adding frames to the C
+stack.  To execute a routine, the initial function for the routine is called
+and then a small bit of code called a \fItrampoline\fR iteratively takes
+functions off the stack and calls them, using the value of the last call as the
+value of the routine.
+.PP
+\fBTcl_NRCallObjProc\fR calls \fInreProc\fR using a new trampoline.
+.PP
+\fBTcl_NRCreateCommand\fR, an alternative to \fBTcl_CreateObjCommand\fR,
+resolves \fIcmdName\fR, which may contain namespace qualifiers, relative to the
+current namespace, creates a command by that name, and returns a token for the
+command which may be used in subsequent calls to \fBTcl_GetCommandName\fR.
+Except for a few cases noted below any existing command by the same name is
+first deleted.  If \fIinterp\fR is in the process of being deleted
+\fBTcl_NRCreateCommand\fR does not create any command, does not delete any
+command, and returns NULL.
+.PP
+\fBTcl_NREvalObj\fR pushes a function that is like \fBTcl_EvalObjEx\fR but
+consumes no space on the C stack.
+.PP
+\fBTcl_NREvalObjv\fR pushes a function that is like \fBTcl_EvalObjv\fR but
+consumes no space on the C stack.
+.PP
+\fBTcl_NRCmdSwap\fR is like \fBTcl_NREvalObjv\fR, but uses \fIcmd\fR, a token
+previously returned by \fBTcl_CreateObjCommand\fR or
+\fBTcl_GetCommandFromObj\fR, instead of resolving the first word of \fIobjv\fR.
+.  The name of this command must be the same as \fIobjv[0]\fR.
+.PP
+\fBTcl_NRExprObj\fR pushes a function that evaluates \fIobjPtr\fR as an
+expression in the same manner as \fBTcl_ExprObj\fR but without consuming space
+on the C stack.
+.PP
+All of the functions return \fBTCL_OK\fR if the evaluation of the script,
+command, or expression has been scheduled successfully.  Otherwise (for example
+if the command name cannot be resolved), they return \fBTCL_ERROR\fR and store
+a message as the interpreter's result.
+.PP
+\fBTcl_NRAddCallback\fR pushes \fIpostProcPtr\fR.  The signature for
+\fBTcl_NRPostProc\fR is:
 .PP
 .CS
 typedef int
@@ -185,25 +135,13 @@ typedef int
         int \fIresult\fR);
 .CE
 .PP
-When the trampoline invokes the callback function, the \fIdata\fR
-parameter will point to an array containing the four one-word
-quantities that were passed to \fBTcl_NRAddCallback\fR in the
-\fIdata0\fR through \fIdata3\fR parameters. The Tcl interpreter will
-be designated by the \fIinterp\fR parameter, and the \fIresult\fR
-parameter will contain the result (\fBTCL_OK\fR, \fBTCL_ERROR\fR,
-\fBTCL_RETURN\fR, \fBTCL_BREAK\fR or \fBTCL_CONTINUE\fR) that was
-returned by the command evaluation. The callback function is expected,
-in turn, either to return a \fIresult\fR to control further evaluation.
-.PP
-Multiple \fBTcl_NRAddCallback\fR invocations may request multiple
-callbacks, which may be to the same or different callback
-functions. If multiple callbacks are requested, they are executed in
-last-in, first-out order, that is, the most recently requested
-callback is executed first.
+\fIdata\fR is a pointer to an array containing \fIdata0\fR through \fIdata3\fR.
+\fIresult\fR is the value returned by the previous function implementing part
+the routine.
 .SH EXAMPLE
 .PP
-The usual pattern for Tcl commands that invoke other Tcl commands
-is something like:
+The following command uses \fBTcl_EvalObjEx\fR, which consumes space on the C
+stack, to evalute a script:
 .PP
 .CS
 int
@@ -228,28 +166,17 @@ int
         \fITheCmdOldObjProc\fR, clientData, TheCmdDeleteProc);
 .CE
 .PP
-To enable a command like this one for trampoline-based evaluation,
-it must be split into three pieces:
-.IP \(bu
-A non-trampoline implementation, \fITheCmdNewObjProc\fR,
-which will simply create a trampoline
-and invoke the trampoline-based implementation.
-.IP \(bu
-A trampoline-enabled implementation, \fITheCmdNRObjProc\fR.  This
-function will perform the initialization, request that the trampoline
-call the postprocessing routine after command evaluation, and finally,
-request that the trampoline call the inner command.
-.IP \(bu
-A postprocessing routine, \fITheCmdPostProc\fR. This function will
-perform the postprocessing formerly done after the return from the
-inner command in \fITheCmdObjProc\fR.
-.PP
-The non-trampoline implementation is simple and stylized, containing
-a single statement:
+To avoid consuming space on the C stack, \fITheCmdOldObjProc\fR is renamed to
+\fITheCmdNRObjProc\fR and the postprocessing step is split into a separate
+function, \fITheCmdPostProc\fR, which is pushed onto the function stack.
+\fITcl_EvalObjEx\fR is replaced with \fITcl_NREvalObj\fR, which uses a
+trampoline instead of consuming space on the C stack.  A new version of
+\fITheCmdOldObjProc\fR is just a a wrapper that uses \fBTcl_NRCallObjProc\fR to
+call \fITheCmdNRObjProc\fR:
 .PP
 .CS
 int
-\fITheCmdNewObjProc\fR(
+\fITheCmdOldObjProc\fR(
     ClientData clientData,
     Tcl_Interp *interp,
     int objc,
@@ -260,9 +187,6 @@ int
 }
 .CE
 .PP
-The trampoline-enabled implementation requests postprocessing,
-and returns to the trampoline requesting command evaluation.
-.PP
 .CS
 int
 \fITheCmdNRObjProc\fR
@@ -284,9 +208,6 @@ int
 }
 .CE
 .PP
-The postprocessing procedure does whatever the original command did
-upon return from the inner evaluation.
-.PP
 .CS
 int
 \fITheCmdNRPostProc\fR(
@@ -303,26 +224,13 @@ int
 }
 .CE
 .PP
-If \fItheCommand\fR is a command that results in multiple commands or
-scripts being evaluated, its postprocessing routine may schedule
-additional postprocessing and then request another command evaluation
-by means of \fBTcl_NREvalObj\fR or one of the other evaluation
-routines. Looping and sequencing constructs may be implemented in this way.
-.PP
-Finally, to install a trampoline-enabled command in the interpreter,
-\fBTcl_NRCreateCommand\fR is used in place of
-\fBTcl_CreateObjCommand\fR.  It accepts two command procedures instead
-of one. The first is for use when no trampoline is yet on the stack,
-and the second is for use when there is already a trampoline in place.
+Any function comprising a routine can push other functions, making it possible
+implement looping and sequencing constructs using the function stack.
 .PP
-.CS
-\fBTcl_NRCreateCommand\fR(interp, "theCommand",
-        \fITheCmdNewObjProc\fR, \fITheCmdNRObjProc\fR, clientData,
-        TheCmdDeleteProc);
-.CE
 .SH "SEE ALSO"
 Tcl_CreateCommand(3), Tcl_CreateObjCommand(3), Tcl_EvalObjEx(3), Tcl_GetCommandFromObj(3), Tcl_ExprObj(3)
 .SH KEYWORDS
 stackless, nonrecursive, execute, command, global, value, result, script
 .SH COPYRIGHT
-Copyright (c) 2008 by Kevin B. Kenny
+Copyright (c) 2008 by Kevin B. Kenny.
+Copyright (c) 2018 by Nathan Coulter.
diff --git a/doc/format.n b/doc/format.n
index 4eb566d..eb64491 100644
--- a/doc/format.n
+++ b/doc/format.n
@@ -83,14 +83,15 @@ Specifies that the number should be padded on the left with
 zeroes instead of spaces.
 .TP 10
 \fB#\fR
-Requests an alternate output form. For \fBo\fR and \fBO\fR
-conversions it guarantees that the first digit is always \fB0\fR.
-For \fBx\fR or \fBX\fR conversions, \fB0x\fR or \fB0X\fR (respectively)
+Requests an alternate output form. For \fBo\fR conversions,
+\fB0o\fR will be added to the beginning of the result unless
+it is zero. For \fBx\fR or \fBX\fR conversions, \fB0x\fR
 will be added to the beginning of the result unless it is zero.
 For \fBb\fR conversions, \fB0b\fR
 will be added to the beginning of the result unless it is zero.
-For \fBd\fR conversions, \fB0d\fR will be added to the beginning
-of the result unless it is zero.
+For \fBd\fR conversions, \fB0d\fR there is no effect unless
+the \fB0\fR specifier is used as well: In that case, \fB0d\fR
+will be added to the beginning.
 For all floating-point conversions (\fBe\fR, \fBE\fR, \fBf\fR,
 \fBg\fR, and \fBG\fR) it guarantees that the result always
 has a decimal point.
@@ -132,7 +133,7 @@ it must be a numeric string.
 .SS "OPTIONAL SIZE MODIFIER"
 .PP
 The fifth part of a conversion specifier is a size modifier,
-which must be \fBll\fR, \fBh\fR, or \fBl\fR.
+which must be \fBll\fR, \fBh\fR, \fBl\fR, or \fBL\fR.
 If it is \fBll\fR it specifies that an integer value is taken
 without truncation for conversion to a formatted substring.
 If it is \fBh\fR it specifies that an integer value is
@@ -140,7 +141,9 @@ truncated to a 16-bit range before converting.  This option is rarely useful.
 If it is \fBl\fR it specifies that the integer value is
 truncated to the same range as that produced by the \fBwide()\fR
 function of the \fBexpr\fR command (at least a 64-bit range).
-If neither \fBh\fR nor \fBl\fR are present, the integer value is
+If it is \fBL\fR it specifies that an integer or double value is taken
+without truncation for conversion to a formatted substring.
+If neither \fBh\fR nor \fBl\fR nor \fBL\fR are present, the integer value is
 truncated to the same range as that produced by the \fBint()\fR
 function of the \fBexpr\fR command (at least a 32-bit range, but
 determined by the value of the \fBwordSize\fR element of the
@@ -171,7 +174,7 @@ for \fBx\fR and
 for \fBX\fR).
 .TP 10
 \fBb\fR
-Convert integer to binary string, using digits 0 and 1.
+Convert integer to unsigned binary string, using digits 0 and 1.
 .TP 10
 \fBc\fR
 Convert integer to the Unicode character it represents.
@@ -200,8 +203,19 @@ precision, then convert number as for \fB%e\fR or
 Otherwise convert as for \fB%f\fR.
 Trailing zeroes and a trailing decimal point are omitted.
 .TP 10
+\fBa\fR or \fBA\fR
+Convert double to hexadecimal notation in the form
+\fI0x1.yyy\fBp\(+-\fIzz\fR, where the number of \fIy\fR's is
+determined by the precision (default: 13).
+If the \fBA\fR form is used then the hex characters
+are printed in uppercase.
+.TP 10
 \fB%\fR
 No conversion: just insert \fB%\fR.
+.TP 10
+\fBp\fR
+Shorthand form for \fB0x%zx\fR, so it outputs the integer in
+hexadecimal form with \fB0x\fR prefix.
 .SH "DIFFERENCES FROM ANSI SPRINTF"
 .PP
 The behavior of the format command is the same as the
@@ -210,13 +224,12 @@ differences:
 .IP [1]
 Tcl guarantees that it will be working with UNICODE characters.
 .IP [2]
-\fB%p\fR and \fB%n\fR specifiers are not supported.
+\fB%n\fR specifier is not supported.
 .IP [3]
 For \fB%c\fR conversions the argument must be an integer value,
 which will then be converted to the corresponding character value.
 .IP [4]
 The size modifiers are ignored when formatting floating-point values.
-The \fBll\fR modifier has no \fBsprintf\fR counterpart.
 The \fBb\fR specifier has no \fBsprintf\fR counterpart.
 .SH EXAMPLES
 .PP
diff --git a/doc/lsearch.n b/doc/lsearch.n
index c2644b8..12c2786 100644
--- a/doc/lsearch.n
+++ b/doc/lsearch.n
@@ -148,6 +148,19 @@ or \fB\-not\fR.
 These options are used to search lists of lists.  They may be used
 with any other options.
 .TP
+\fB\-stride\0\fIstrideLength\fR
+.
+If this option is specified, the list is treated as consisting of
+groups of \fIstrideLength\fR elements and the groups are searched by
+either their first element or, if the \fB\-index\fR option is used,
+by the element within each group given by the first index passed to
+\fB\-index\fR (which is then ignored by \fB\-index\fR). The resulting
+index always points to the first element in a group.
+.PP
+The list length must be an integer multiple of \fIstrideLength\fR, which
+in turn must be at least 1. A \fIstrideLength\fR of 1 is the default and
+indicates no grouping.
+.TP
 \fB\-index\fR\0\fIindexList\fR
 .
 This option is designed for use when searching within nested lists.
@@ -208,6 +221,13 @@ It is also possible to search inside elements:
 \fBlsearch\fR -index 1 -all -inline {{a abc} {b bcd} {c cde}} *bc*
       \fI\(-> {a abc} {b bcd}\fR
 .CE
+.PP
+The same thing for a flattened list:
+.PP
+.CS
+\fBlsearch\fR -stride 2 -index 1 -all -inline {a abc b bcd c cde} *bc*
+      \fI\(-> {a abc b bcd}\fR
+.CE
 .SH "SEE ALSO"
 foreach(n), list(n), lappend(n), lindex(n), linsert(n), llength(n),
 lset(n), lsort(n), lrange(n), lreplace(n),