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+'\" et
+.TH wordexp.h "0P" 2013 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.SH PROLOG
+This manual page is part of the POSIX Programmer's Manual.
+The Linux implementation of this interface may differ (consult
+the corresponding Linux manual page for details of Linux behavior),
+or the interface may not be implemented on Linux.
+
+.SH NAME
+wordexp.h
+\(em word-expansion types
+.SH SYNOPSIS
+.LP
+.nf
+#include <wordexp.h>
+.fi
+.SH DESCRIPTION
+The
+.IR <wordexp.h>
+header shall define the structures and symbolic constants used by the
+\fIwordexp\fR()
+and
+\fIwordfree\fR()
+functions.
+.P
+The
+.IR <wordexp.h>
+header shall define the
+.BR wordexp_t
+structure type, which shall include at least the following members:
+.sp
+.RS 4
+.nf
+\fB
+size_t we_wordc \fRCount of words matched by \fIwords.\fR
+char **we_wordv \fRPointer to list of expanded words.\fR
+size_t we_offs \fRSlots to reserve at the beginning of \fIwe_wordv.\fR
+.fi \fR
+.P
+.RE
+.P
+The
+.IR <wordexp.h>
+header shall define the following symbolic constants for use as flags
+for the
+\fIwordexp\fR()
+function:
+.IP WRDE_APPEND 14
+Append words to those previously generated.
+.IP WRDE_DOOFFS 14
+Number of null pointers to prepend to
+.IR we_wordv .
+.IP WRDE_NOCMD 14
+Fail if command substitution is requested.
+.IP WRDE_REUSE 14
+The
+.IR pwordexp
+argument was passed to a previous successful call to
+\fIwordexp\fR(),
+and has not been passed to
+\fIwordfree\fR().
+The result is the same as if the application had called
+\fIwordfree\fR()
+and then called
+\fIwordexp\fR()
+without WRDE_REUSE.
+.IP WRDE_SHOWERR 14
+Do not redirect
+.IR stderr
+to
+.BR /dev/null .
+.IP WRDE_UNDEF 14
+Report error on an attempt to expand an undefined shell variable.
+.P
+The
+.IR <wordexp.h>
+header shall define the following symbolic constants as error
+return values:
+.IP WRDE_BADCHAR 14
+One of the unquoted characters\(em\c
+<newline>,
+.BR '|' ,
+.BR '&' ,
+.BR ';' ,
+.BR '<' ,
+.BR '>' ,
+.BR '(' ,
+.BR ')' ,
+.BR '{' ,
+.BR '}' \(em\c
+appears in
+.IR words
+in an inappropriate context.
+.IP WRDE_BADVAL 14
+Reference to undefined shell variable when WRDE_UNDEF is set in
+.IR flags .
+.IP WRDE_CMDSUB 14
+Command substitution requested when WRDE_NOCMD was set in
+.IR flags .
+.IP WRDE_NOSPACE 14
+Attempt to allocate memory failed.
+.IP WRDE_SYNTAX 14
+Shell syntax error, such as unbalanced parentheses or unterminated string.
+.P
+The
+.IR <wordexp.h>
+header shall define the
+.BR size_t
+type as described in
+.IR <stddef.h> .
+.P
+The following shall be declared as functions and may also be defined as
+macros. Function prototypes shall be provided.
+.sp
+.RS 4
+.nf
+\fB
+int wordexp(const char *restrict, wordexp_t *restrict, int);
+void wordfree(wordexp_t *);
+.fi \fR
+.P
+.RE
+.LP
+.IR "The following sections are informative."
+.SH "APPLICATION USAGE"
+None.
+.SH RATIONALE
+None.
+.SH "FUTURE DIRECTIONS"
+None.
+.SH "SEE ALSO"
+.IR "\fB<stddef.h>\fP"
+.P
+The System Interfaces volume of POSIX.1\(hy2008,
+.IR "Section 2.6" ", " "Word Expansions"
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 7, Copyright (C) 2013 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group.
+(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/online.html .
+
+Any typographical or formatting errors that appear
+in this page are most likely
+to have been introduced during the conversion of the source files to
+man page format. To report such errors, see
+https://www.kernel.org/doc/man-pages/reporting_bugs.html .