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+/* syntax.h -- Syntax definitions for the shell */
+
+/* Copyright (C) 2000, 2001, 2005, 2008, 2009-2020 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Bash is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Bash. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _SYNTAX_H_
+#define _SYNTAX_H_
+
+/* Defines for use by mksyntax.c */
+
+#define slashify_in_quotes "\\`$\"\n"
+#define slashify_in_here_document "\\`$"
+
+#define shell_meta_chars "()<>;&|"
+#define shell_break_chars "()<>;&| \t\n"
+
+#define shell_quote_chars "\"`'"
+
+#if defined (PROCESS_SUBSTITUTION)
+# define shell_exp_chars "$<>"
+#else
+# define shell_exp_chars "$"
+#endif
+
+#if defined (EXTENDED_GLOB)
+# define ext_glob_chars "@*+?!"
+#else
+# define ext_glob_chars ""
+#endif
+#define shell_glob_chars "*?[]^"
+
+/* Defines shared by mksyntax.c and the rest of the shell code. */
+
+/* Values for character flags in syntax tables */
+
+#define CWORD 0x0000 /* nothing special; an ordinary character */
+#define CSHMETA 0x0001 /* shell meta character */
+#define CSHBRK 0x0002 /* shell break character */
+#define CBACKQ 0x0004 /* back quote */
+#define CQUOTE 0x0008 /* shell quote character */
+#define CSPECL 0x0010 /* special character that needs quoting */
+#define CEXP 0x0020 /* shell expansion character */
+#define CBSDQUOTE 0x0040 /* characters escaped by backslash in double quotes */
+#define CBSHDOC 0x0080 /* characters escaped by backslash in here doc */
+#define CGLOB 0x0100 /* globbing characters */
+#define CXGLOB 0x0200 /* extended globbing characters */
+#define CXQUOTE 0x0400 /* cquote + backslash */
+#define CSPECVAR 0x0800 /* single-character shell variable name */
+#define CSUBSTOP 0x1000 /* values of OP for ${word[:]OPstuff} */
+#define CBLANK 0x2000 /* whitespace (blank) character */
+
+/* Defines for use by the rest of the shell. */
+extern int sh_syntaxtab[];
+extern int sh_syntabsiz;
+
+#define shellmeta(c) (sh_syntaxtab[(unsigned char)(c)] & CSHMETA)
+#define shellbreak(c) (sh_syntaxtab[(unsigned char)(c)] & CSHBRK)
+#define shellquote(c) (sh_syntaxtab[(unsigned char)(c)] & CQUOTE)
+#define shellxquote(c) (sh_syntaxtab[(unsigned char)(c)] & CXQUOTE)
+
+#define shellblank(c) (sh_syntaxtab[(unsigned char)(c)] & CBLANK)
+
+#define parserblank(c) ((c) == ' ' || (c) == '\t')
+
+#define issyntype(c, t) ((sh_syntaxtab[(unsigned char)(c)] & (t)) != 0)
+#define notsyntype(c,t) ((sh_syntaxtab[(unsigned char)(c)] & (t)) == 0)
+
+#if defined (PROCESS_SUBSTITUTION)
+# define shellexp(c) ((c) == '$' || (c) == '<' || (c) == '>')
+#else
+# define shellexp(c) ((c) == '$')
+#endif
+
+#if defined (EXTENDED_GLOB)
+# define PATTERN_CHAR(c) \
+ ((c) == '@' || (c) == '*' || (c) == '+' || (c) == '?' || (c) == '!')
+#else
+# define PATTERN_CHAR(c) 0
+#endif
+
+#define GLOB_CHAR(c) \
+ ((c) == '*' || (c) == '?' || (c) == '[' || (c) == ']' || (c) == '^')
+
+#define CTLESC '\001'
+#define CTLNUL '\177'
+
+#if !defined (HAVE_ISBLANK) && !defined (isblank)
+# define isblank(x) ((x) == ' ' || (x) == '\t')
+#endif
+
+#endif /* _SYNTAX_H_ */