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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 
+.TH "<wordexp.h>" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" <wordexp.h> 
+.SH NAME
+wordexp.h \- word-expansion types
+.SH SYNOPSIS
+.LP
+\fB#include <wordexp.h>\fP
+.SH DESCRIPTION
+.LP
+The \fI<wordexp.h>\fP header shall define the structures and symbolic
+constants used by the \fIwordexp\fP() and \fIwordfree\fP() functions.
+.LP
+The structure type \fBwordexp_t\fP shall contain at least the following
+members:
+.sp
+.RS
+.nf
+
+\fBsize_t   we_wordc \fP Count of words matched by \fIwords.\fP \fB
+char   **we_wordv \fP Pointer to list of expanded words. \fB
+size_t   we_offs  \fP Slots to reserve at the beginning of \fIwe_wordv.\fP \fB
+\fP
+.fi
+.RE
+.LP
+The \fIflags\fP argument to the \fIwordexp\fP() function shall be
+the
+bitwise-inclusive OR of the following flags:
+.TP 7
+WRDE_APPEND
+Append words to those previously generated.
+.TP 7
+WRDE_DOOFFS
+Number of null pointers to prepend to \fIwe_wordv\fP.
+.TP 7
+WRDE_NOCMD
+Fail if command substitution is requested.
+.TP 7
+WRDE_REUSE
+The \fIpwordexp\fP argument was passed to a previous successful call
+to \fIwordexp\fP(), and has not been passed to \fIwordfree\fP(). The
+result is the same as if the application had called \fIwordfree\fP()
+and then called \fIwordexp\fP() without
+WRDE_REUSE.
+.TP 7
+WRDE_SHOWERR
+Do not redirect \fIstderr\fP to \fB/dev/null\fP.
+.TP 7
+WRDE_UNDEF
+Report error on an attempt to expand an undefined shell variable.
+.sp
+.LP
+The following constants shall be defined as error return values:
+.TP 7
+WRDE_BADCHAR
+One of the unquoted characters- <newline>, \fB'|'\fP , \fB'&'\fP ,
+\fB';'\fP , \fB'<'\fP ,
+\fB'>'\fP , \fB'('\fP , \fB')'\fP , \fB'{'\fP , \fB'}'\fP - appears
+in \fIwords\fP in an inappropriate
+context.
+.TP 7
+WRDE_BADVAL
+Reference to undefined shell variable when WRDE_UNDEF is set in \fIflags\fP.
+.TP 7
+WRDE_CMDSUB
+Command substitution requested when WRDE_NOCMD was set in \fIflags\fP.
+.TP 7
+WRDE_NOSPACE
+Attempt to allocate memory failed.
+.TP 7
+WRDE_NOSYS
+Reserved. 
+.TP 7
+WRDE_SYNTAX
+Shell syntax error, such as unbalanced parentheses or unterminated
+string.
+.sp
+.LP
+The \fI<wordexp.h>\fP header shall define the following type:
+.TP 7
+\fBsize_t\fP
+As described in \fI<stddef.h>\fP . 
+.sp
+.LP
+The following shall be declared as functions and may also be defined
+as macros. Function prototypes shall be provided.
+.sp
+.RS
+.nf
+
+\fBint  wordexp(const char *restrict, wordexp_t *restrict, int);
+void wordfree(wordexp_t *);
+\fP
+.fi
+.RE
+.LP
+The implementation may define additional macros or constants using
+names beginning with WRDE_.
+.LP
+\fIThe following sections are informative.\fP
+.SH APPLICATION USAGE
+.LP
+None.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fI<stddef.h>\fP , the System Interfaces volume of IEEE\ Std\ 1003.1-2001,
+\fIwordexp\fP(), the Shell and Utilities volume of IEEE\ Std\ 1003.1-2001
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group. In the
+event of any discrepancy between this version and the original IEEE and
+The Open Group Standard, the original IEEE and The Open Group Standard
+is the referee document. The original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .