'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
-'\" RCS: @(#) $Id: ParseCmd.3,v 1.10.2.1 2003/03/19 20:06:50 dgp Exp $
-'\"
-'\" The definitions below are for supplemental macros used in Tcl/Tk
-'\" manual entries.
-'\"
-'\" .AP type name in/out ?indent?
-'\" Start paragraph describing an argument to a library procedure.
-'\" type is type of argument (int, etc.), in/out is either "in", "out",
-'\" or "in/out" to describe whether procedure reads or modifies arg,
-'\" and indent is equivalent to second arg of .IP (shouldn't ever be
-'\" needed; use .AS below instead)
-'\"
-'\" .AS ?type? ?name?
-'\" Give maximum sizes of arguments for setting tab stops. Type and
-'\" name are examples of largest possible arguments that will be passed
-'\" to .AP later. If args are omitted, default tab stops are used.
-'\"
-'\" .BS
-'\" Start box enclosure. From here until next .BE, everything will be
-'\" enclosed in one large box.
-'\"
-'\" .BE
-'\" End of box enclosure.
-'\"
-'\" .CS
-'\" Begin code excerpt.
-'\"
-'\" .CE
-'\" End code excerpt.
-'\"
-'\" .VS ?version? ?br?
-'\" Begin vertical sidebar, for use in marking newly-changed parts
-'\" of man pages. The first argument is ignored and used for recording
-'\" the version when the .VS was added, so that the sidebars can be
-'\" found and removed when they reach a certain age. If another argument
-'\" is present, then a line break is forced before starting the sidebar.
-'\"
-'\" .VE
-'\" End of vertical sidebar.
-'\"
-'\" .DS
-'\" Begin an indented unfilled display.
-'\"
-'\" .DE
-'\" End of indented unfilled display.
-'\"
-'\" .SO
-'\" Start of list of standard options for a Tk widget. The
-'\" options follow on successive lines, in four columns separated
-'\" by tabs.
-'\"
-'\" .SE
-'\" End of list of standard options for a Tk widget.
-'\"
-'\" .OP cmdName dbName dbClass
-'\" Start of description of a specific option. cmdName gives the
-'\" option's name as specified in the class command, dbName gives
-'\" the option's name in the option database, and dbClass gives
-'\" the option's class in the option database.
-'\"
-'\" .UL arg1 arg2
-'\" Print arg1 underlined, then print arg2 normally.
-'\"
-'\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $
-'\"
-'\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
+.TH Tcl_ParseCommand 3 8.3 Tcl "Tcl Library Procedures"
+.\" The -*- nroff -*- definitions below are for supplemental macros used
+.\" in Tcl/Tk manual entries.
+.\"
+.\" .AP type name in/out ?indent?
+.\" Start paragraph describing an argument to a library procedure.
+.\" type is type of argument (int, etc.), in/out is either "in", "out",
+.\" or "in/out" to describe whether procedure reads or modifies arg,
+.\" and indent is equivalent to second arg of .IP (shouldn't ever be
+.\" needed; use .AS below instead)
+.\"
+.\" .AS ?type? ?name?
+.\" Give maximum sizes of arguments for setting tab stops. Type and
+.\" name are examples of largest possible arguments that will be passed
+.\" to .AP later. If args are omitted, default tab stops are used.
+.\"
+.\" .BS
+.\" Start box enclosure. From here until next .BE, everything will be
+.\" enclosed in one large box.
+.\"
+.\" .BE
+.\" End of box enclosure.
+.\"
+.\" .CS
+.\" Begin code excerpt.
+.\"
+.\" .CE
+.\" End code excerpt.
+.\"
+.\" .VS ?version? ?br?
+.\" Begin vertical sidebar, for use in marking newly-changed parts
+.\" of man pages. The first argument is ignored and used for recording
+.\" the version when the .VS was added, so that the sidebars can be
+.\" found and removed when they reach a certain age. If another argument
+.\" is present, then a line break is forced before starting the sidebar.
+.\"
+.\" .VE
+.\" End of vertical sidebar.
+.\"
+.\" .DS
+.\" Begin an indented unfilled display.
+.\"
+.\" .DE
+.\" End of indented unfilled display.
+.\"
+.\" .SO ?manpage?
+.\" Start of list of standard options for a Tk widget. The manpage
+.\" argument defines where to look up the standard options; if
+.\" omitted, defaults to "options". The options follow on successive
+.\" lines, in three columns separated by tabs.
+.\"
+.\" .SE
+.\" End of list of standard options for a Tk widget.
+.\"
+.\" .OP cmdName dbName dbClass
+.\" Start of description of a specific option. cmdName gives the
+.\" option's name as specified in the class command, dbName gives
+.\" the option's name in the option database, and dbClass gives
+.\" the option's class in the option database.
+.\"
+.\" .UL arg1 arg2
+.\" Print arg1 underlined, then print arg2 normally.
+.\"
+.\" .QW arg1 ?arg2?
+.\" Print arg1 in quotes, then arg2 normally (for trailing punctuation).
+.\"
+.\" .PQ arg1 ?arg2?
+.\" Print an open parenthesis, arg1 in quotes, then arg2 normally
+.\" (for trailing punctuation) and then a closing parenthesis.
+.\"
+.\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
.if t .wh -1.3i ^B
.nr ^l \n(.l
.ad b
-'\" # Start an argument description
+.\" # Start an argument description
.de AP
.ie !"\\$4"" .TP \\$4
.el \{\
.\}
.ta \\n()Au \\n()Bu
.ie !"\\$3"" \{\
-\&\\$1 \\fI\\$2\\fP (\\$3)
+\&\\$1 \\fI\\$2\\fP (\\$3)
.\".b
.\}
.el \{\
.\}
.\}
..
-'\" # define tabbing values for .AP
+.\" # define tabbing values for .AP
.de AS
.nr )A 10n
.if !"\\$1"" .nr )A \\w'\\$1'u+3n
.nr )C \\n()Bu+\\w'(in/out)'u+2n
..
.AS Tcl_Interp Tcl_CreateInterp in/out
-'\" # BS - start boxed text
-'\" # ^y = starting y location
-'\" # ^b = 1
+.\" # BS - start boxed text
+.\" # ^y = starting y location
+.\" # ^b = 1
.de BS
.br
.mk ^y
.if n \l'\\n(.lu\(ul'
.if n .fi
..
-'\" # BE - end boxed text (draw box now)
+.\" # BE - end boxed text (draw box now)
.de BE
.nf
.ti 0
.br
.nr ^b 0
..
-'\" # VS - start vertical sidebar
-'\" # ^Y = starting y location
-'\" # ^v = 1 (for troff; for nroff this doesn't matter)
+.\" # VS - start vertical sidebar
+.\" # ^Y = starting y location
+.\" # ^v = 1 (for troff; for nroff this doesn't matter)
.de VS
.if !"\\$2"" .br
.mk ^Y
.ie n 'mc \s12\(br\s0
.el .nr ^v 1u
..
-'\" # VE - end of vertical sidebar
+.\" # VE - end of vertical sidebar
.de VE
.ie n 'mc
.el \{\
.\}
.nr ^v 0
..
-'\" # Special macro to handle page bottom: finish off current
-'\" # box/sidebar if in box/sidebar mode, then invoked standard
-'\" # page bottom macro.
+.\" # Special macro to handle page bottom: finish off current
+.\" # box/sidebar if in box/sidebar mode, then invoked standard
+.\" # page bottom macro.
.de ^B
.ev 2
'ti 0
.mk ^Y
.\}
..
-'\" # DS - begin display
+.\" # DS - begin display
.de DS
.RS
.nf
.sp
..
-'\" # DE - end display
+.\" # DE - end display
.de DE
.fi
.RE
.sp
..
-'\" # SO - start of list of standard options
+.\" # SO - start of list of standard options
.de SO
+'ie '\\$1'' .ds So \\fBoptions\\fR
+'el .ds So \\fB\\$1\\fR
.SH "STANDARD OPTIONS"
.LP
.nf
.ta 5.5c 11c
.ft B
..
-'\" # SE - end of list of standard options
+.\" # SE - end of list of standard options
.de SE
.fi
.ft R
.LP
-See the \\fBoptions\\fR manual entry for details on the standard options.
+See the \\*(So manual entry for details on the standard options.
..
-'\" # OP - start of full description for a single option
+.\" # OP - start of full description for a single option
.de OP
.LP
.nf
.fi
.IP
..
-'\" # CS - begin code excerpt
+.\" # CS - begin code excerpt
.de CS
.RS
.nf
.ta .25i .5i .75i 1i
..
-'\" # CE - end code excerpt
+.\" # CE - end code excerpt
.de CE
.fi
.RE
..
+.\" # UL - underline word
.de UL
\\$1\l'|0\(ul'\\$2
..
-.TH Tcl_ParseCommand 3 8.3 Tcl "Tcl Library Procedures"
+.\" # QW - apply quotation marks to word
+.de QW
+.ie '\\*(lq'"' ``\\$1''\\$2
+.\"" fix emacs highlighting
+.el \\*(lq\\$1\\*(rq\\$2
+..
+.\" # PQ - apply parens and quotation marks to word
+.de PQ
+.ie '\\*(lq'"' (``\\$1''\\$2)\\$3
+.\"" fix emacs highlighting
+.el (\\*(lq\\$1\\*(rq\\$2)\\$3
+..
+.\" # QR - quoted range
+.de QR
+.ie '\\*(lq'"' ``\\$1''\\-``\\$2''\\$3
+.\"" fix emacs highlighting
+.el \\*(lq\\$1\\*(rq\\-\\*(lq\\$2\\*(rq\\$3
+..
+.\" # MT - "empty" string
+.de MT
+.QW ""
+..
.BS
.SH NAME
Tcl_ParseCommand, Tcl_ParseExpr, Tcl_ParseBraces, Tcl_ParseQuotedString, Tcl_ParseVarName, Tcl_ParseVar, Tcl_FreeParse, Tcl_EvalTokens, Tcl_EvalTokensStandard \- parse Tcl scripts and expressions
\fB#include <tcl.h>\fR
.sp
int
-\fBTcl_ParseCommand\fR(\fIinterp, string, numBytes, nested, parsePtr\fR)
+\fBTcl_ParseCommand\fR(\fIinterp, start, numBytes, nested, parsePtr\fR)
.sp
int
-\fBTcl_ParseExpr\fR(\fIinterp, string, numBytes, parsePtr\fR)
+\fBTcl_ParseExpr\fR(\fIinterp, start, numBytes, parsePtr\fR)
.sp
int
-\fBTcl_ParseBraces\fR(\fIinterp, string, numBytes, parsePtr, append, termPtr\fR)
+\fBTcl_ParseBraces\fR(\fIinterp, start, numBytes, parsePtr, append, termPtr\fR)
.sp
int
-\fBTcl_ParseQuotedString\fR(\fIinterp, string, numBytes, parsePtr, append, termPtr\fR)
+\fBTcl_ParseQuotedString\fR(\fIinterp, start, numBytes, parsePtr, append, termPtr\fR)
.sp
int
-\fBTcl_ParseVarName\fR(\fIinterp, string, numBytes, parsePtr, append\fR)
+\fBTcl_ParseVarName\fR(\fIinterp, start, numBytes, parsePtr, append\fR)
.sp
-CONST char *
-\fBTcl_ParseVar\fR(\fIinterp, string, termPtr\fR)
+const char *
+\fBTcl_ParseVar\fR(\fIinterp, start, termPtr\fR)
.sp
\fBTcl_FreeParse\fR(\fIusedParsePtr\fR)
.sp
int
\fBTcl_EvalTokensStandard\fR(\fIinterp, tokenPtr, numTokens\fR)
.SH ARGUMENTS
-.AS Tcl_Interp *usedParsePtr
+.AS Tcl_Interp *usedParsePtr out
.AP Tcl_Interp *interp out
For procedures other than \fBTcl_FreeParse\fR, \fBTcl_EvalTokens\fR
and \fBTcl_EvalTokensStandard\fR, used only for error reporting;
For \fBTcl_EvalTokens\fR and \fBTcl_EvalTokensStandard\fR,
determines the context for evaluating the
script and also is used for error reporting; must not be NULL.
-.AP "CONST char" *string in
+.AP "const char" *start in
Pointer to first character in string to parse.
.AP int numBytes in
-Number of bytes in \fIstring\fR, not including any terminating null
+Number of bytes in string to parse, not including any terminating null
character. If less than 0 then the script consists of all characters
-in \fIstring\fR up to the first null character.
+following \fIstart\fR up to the first null character.
.AP int nested in
Non-zero means that the script is part of a command substitution so an
unquoted close bracket should be treated as a command terminator. If zero,
is ignored, unless \fIappend\fR is non-zero in a call to
\fBTcl_ParseBraces\fR, \fBTcl_ParseQuotedString\fR,
or \fBTcl_ParseVarName\fR.
-.AP "CONST char" **termPtr out
+.AP "const char" **termPtr out
If not NULL, points to a location where
\fBTcl_ParseBraces\fR, \fBTcl_ParseQuotedString\fR, and
\fBTcl_ParseVar\fR will store a pointer to the character
Points to structure that was filled in by a previous call to
\fBTcl_ParseCommand\fR, \fBTcl_ParseExpr\fR, \fBTcl_ParseVarName\fR, etc.
.BE
-
.SH DESCRIPTION
.PP
These procedures parse Tcl commands or portions of Tcl commands such as
with a collection of tokens describing the information that was parsed.
The procedures normally return \fBTCL_OK\fR.
However, if an error occurs then they return \fBTCL_ERROR\fR,
-leave an error message in \fIinterp's\fR result
+leave an error message in \fIinterp\fR's result
(if \fIinterp\fR is not NULL),
and leave nothing in \fIparsePtr\fR.
.PP
.PP
\fBTcl_ParseExpr\fR parses Tcl expressions.
Given a pointer to a script containing an expression,
-\fBTcl_ParseCommand\fR parses the expression.
+\fBTcl_ParseExpr\fR parses the expression.
If the expression was parsed successfully,
\fBTcl_ParseExpr\fR returns \fBTCL_OK\fR and fills in the
structure pointed to by \fIparsePtr\fR with information about the
.PP
\fBTcl_ParseBraces\fR parses a string or command argument
enclosed in braces such as
-\fB{hello}\fR or \fB{string \\t with \\t tabs}\fR
-from the beginning of its argument \fIstring\fR.
-The first character of \fIstring\fR must be \fB{\fR.
+\fB{hello}\fR or \fB{string \et with \et tabs}\fR
+from the beginning of its argument \fIstart\fR.
+The first character of \fIstart\fR must be \fB{\fR.
If the braced string was parsed successfully,
\fBTcl_ParseBraces\fR returns \fBTCL_OK\fR,
fills in the structure pointed to by \fIparsePtr\fR
and no information is left at \fI*parsePtr\fR or \fI*termPtr\fR.
.PP
\fBTcl_ParseQuotedString\fR parses a double-quoted string such as
-\fB"sum is [expr $a+$b]"\fR
-from the beginning of the argument \fIstring\fR.
-The first character of \fIstring\fR must be \fB"\fR.
+\fB"sum is [expr {$a+$b}]"\fR
+from the beginning of the argument \fIstart\fR.
+The first character of \fIstart\fR must be \fB\N'34'\fR.
If the double-quoted string was parsed successfully,
\fBTcl_ParseQuotedString\fR returns \fBTCL_OK\fR,
fills in the structure pointed to by \fIparsePtr\fR
with information about the structure of the string
(see below for details),
-and stores a pointer to the character just after the terminating \fB"\fR
+and stores a pointer to the character just after the terminating \fB\N'34'\fR
in the location given by \fI*termPtr\fR.
If an error occurs while parsing the string
then \fBTCL_ERROR\fR is returned,
and no information is left at \fI*parsePtr\fR or \fI*termPtr\fR.
.PP
\fBTcl_ParseVarName\fR parses a Tcl variable reference such as
-\fB$abc\fR or \fB$x([expr $index + 1])\fR from the beginning of its
-\fIstring\fR argument.
-The first character of \fIstring\fR must be \fB$\fR.
+\fB$abc\fR or \fB$x([expr {$index + 1}])\fR from the beginning of its
+\fIstart\fR argument.
+The first character of \fIstart\fR must be \fB$\fR.
If a variable name was parsed successfully, \fBTcl_ParseVarName\fR
returns \fBTCL_OK\fR and fills in the structure pointed to by
\fIparsePtr\fR with information about the structure of the variable name
(see below for details). If an error
occurs while parsing the command then \fBTCL_ERROR\fR is returned, an
-error message is left in \fIinterp\fR's result (if \fIinterp\fR isn't
+error message is left in \fIinterp\fR's result (if \fIinterp\fR is not
NULL), and no information is left at \fI*parsePtr\fR.
.PP
\fBTcl_ParseVar\fR parse a Tcl variable reference such as \fB$abc\fR
-or \fB$x([expr $index + 1])\fR from the beginning of its \fIstring\fR
-argument. The first character of \fIstring\fR must be \fB$\fR. If
+or \fB$x([expr {$index + 1}])\fR from the beginning of its \fIstart\fR
+argument. The first character of \fIstart\fR must be \fB$\fR. If
the variable name is parsed successfully, \fBTcl_ParseVar\fR returns a
pointer to the string value of the variable. If an error occurs while
parsing, then NULL is returned and an error message is left in
.PP
\fBTcl_EvalTokens\fR differs from \fBTcl_EvalTokensStandard\fR only in
the return convention used: it returns the result in a new Tcl_Obj.
-The reference count of the object returned as result has been
+The reference count of the value returned as result has been
incremented, so the caller must
-invoke \fBTcl_DecrRefCount\fR when it is finished with the object.
+invoke \fBTcl_DecrRefCount\fR when it is finished with the value.
If an error or other exception occurs while evaluating the tokens
(such as a reference to a non-existent variable) then the return value
is NULL and an error message is left in \fIinterp\fR's result. The use
of \fBTcl_EvalTokens\fR is deprecated.
-
.SH "TCL_PARSE STRUCTURE"
.PP
\fBTcl_ParseCommand\fR, \fBTcl_ParseExpr\fR, \fBTcl_ParseBraces\fR,
\fBTcl_ParseQuotedString\fR, and \fBTcl_ParseVarName\fR
return parse information in two data structures, Tcl_Parse and Tcl_Token:
+.PP
.CS
typedef struct Tcl_Parse {
- CONST char *\fIcommentStart\fR;
- int \fIcommentSize\fR;
- CONST char *\fIcommandStart\fR;
- int \fIcommandSize\fR;
- int \fInumWords\fR;
- Tcl_Token *\fItokenPtr\fR;
- int \fInumTokens\fR;
- ...
-} Tcl_Parse;
+ const char *\fIcommentStart\fR;
+ int \fIcommentSize\fR;
+ const char *\fIcommandStart\fR;
+ int \fIcommandSize\fR;
+ int \fInumWords\fR;
+ Tcl_Token *\fItokenPtr\fR;
+ int \fInumTokens\fR;
+ ...
+} \fBTcl_Parse\fR;
typedef struct Tcl_Token {
int \fItype\fR;
- CONST char *\fIstart\fR;
+ const char *\fIstart\fR;
int \fIsize\fR;
int \fInumComponents\fR;
-} Tcl_Token;
+} \fBTcl_Token\fR;
.CE
.PP
The first five fields of a Tcl_Parse structure
The \fItype\fR field has one of the following values:
.TP 20
\fBTCL_TOKEN_WORD\fR
+.
This token ordinarily describes one word of a command
but it may also describe a quoted or braced string in an expression.
The token describes a component of the script that is
of \fBTCL_TOKEN_VARIABLE\fR and \fBTCL_TOKEN_BS\fR tokens.
.TP
\fBTCL_TOKEN_SIMPLE_WORD\fR
+.
This token has the same meaning as \fBTCL_TOKEN_WORD\fR, except that
the word is guaranteed to consist of a single \fBTCL_TOKEN_TEXT\fR
sub-token. The \fInumComponents\fR field is always 1.
.TP
+\fBTCL_TOKEN_EXPAND_WORD\fR
+.
+This token has the same meaning as \fBTCL_TOKEN_WORD\fR, except that
+the command parser notes this word began with the expansion
+prefix \fB{*}\fR, indicating that after substitution,
+the list value of this word should be expanded to form multiple
+arguments in command evaluation. This
+token type can only be created by Tcl_ParseCommand.
+.TP
\fBTCL_TOKEN_TEXT\fR
+.
The token describes a range of literal text that is part of a word.
The \fInumComponents\fR field is always 0.
.TP
\fBTCL_TOKEN_BS\fR
+.
The token describes a backslash sequence such as \fB\en\fR or \fB\e0xa3\fR.
The \fInumComponents\fR field is always 0.
.TP
\fBTCL_TOKEN_COMMAND\fR
-The token describes a command whose result result must be substituted into
+.
+The token describes a command whose result must be substituted into
the word. The token includes the square brackets that surround the
command. The \fInumComponents\fR field is always 0 (the nested command
is not parsed; call \fBTcl_ParseCommand\fR recursively if you want to
see its tokens).
.TP
\fBTCL_TOKEN_VARIABLE\fR
+.
The token describes a variable substitution, including the
\fB$\fR, variable name, and array index (if there is one) up through the
close parenthesis that terminates the index. This token is followed
that are part of \fBTCL_TOKEN_VARIABLE\fR tokens in the array index.
.TP
\fBTCL_TOKEN_SUB_EXPR\fR
+.
The token describes one subexpression of an expression
(or an entire expression).
A subexpression may consist of a value
this includes the sub-tokens for any nested \fBTCL_TOKEN_SUB_EXPR\fR tokens.
.TP
\fBTCL_TOKEN_OPERATOR\fR
+.
The token describes one operator of an expression
such as \fB&&\fR or \fBhypot\fR.
-An \fBTCL_TOKEN_OPERATOR\fR token is always preceded by a
+A \fBTCL_TOKEN_OPERATOR\fR token is always preceded by a
\fBTCL_TOKEN_SUB_EXPR\fR token
that describes the operator and its operands;
the \fBTCL_TOKEN_SUB_EXPR\fR token's \fInumComponents\fR field
A binary operator such as \fB*\fR
is followed by two \fBTCL_TOKEN_SUB_EXPR\fR tokens
that describe its operands.
-A unary operator like \fB-\fR
+A unary operator like \fB\-\fR
is followed by a single \fBTCL_TOKEN_SUB_EXPR\fR token
for its operand.
If the operator is a math function such as \fBlog10\fR,
After \fBTcl_ParseCommand\fR returns, the first token pointed to by
the \fItokenPtr\fR field of the
Tcl_Parse structure always has type \fBTCL_TOKEN_WORD\fR or
-\fBTCL_TOKEN_SIMPLE_WORD\fR. It is followed by the sub-tokens
+\fBTCL_TOKEN_SIMPLE_WORD\fR or \fBTCL_TOKEN_EXPAND_WORD\fR.
+It is followed by the sub-tokens
that must be concatenated to produce the value of that word.
The next token is the \fBTCL_TOKEN_WORD\fR or \fBTCL_TOKEN_SIMPLE_WORD\fR
-token for the second word, followed by sub-tokens for that
+of \fBTCL_TOKEN_EXPAND_WORD\fR token for the second word,
+followed by sub-tokens for that
word, and so on until all \fInumWords\fR have been accounted
for.
.PP
It will consist of one or more \fBTCL_TOKEN_TEXT\fR, \fBTCL_TOKEN_BS\fR,
\fBTCL_TOKEN_COMMAND\fR, and \fBTCL_TOKEN_VARIABLE\fR sub-tokens.
The array always contains at least one token;
-for example, if the argument \fIstring\fR is empty,
+for example, if the argument \fIstart\fR is empty,
the array returned consists of a single \fBTCL_TOKEN_TEXT\fR token
with a zero \fIsize\fR field.
Only the token information in the Tcl_Parse structure
.PP
All of the character pointers in the
Tcl_Parse and Tcl_Token structures refer
-to characters in the \fIstring\fR argument passed to
+to characters in the \fIstart\fR argument passed to
\fBTcl_ParseCommand\fR, \fBTcl_ParseExpr\fR, \fBTcl_ParseBraces\fR,
\fBTcl_ParseQuotedString\fR, and \fBTcl_ParseVarName\fR.
.PP
\fBTcl_ParseCommand\fR, \fBTcl_ParseExpr\fR, \fBTcl_ParseBraces\fR,
\fBTcl_ParseQuotedString\fR, and \fBTcl_ParseVarName\fR; they should not be
referenced by code outside of these procedures.
-
.SH KEYWORDS
backslash substitution, braces, command, expression, parse, token, variable substitution
OSDN Git Service
