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Optionally disable splitting of unexpandable variable and command refs

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* include/wordsplit.h (WRDSO_NOVARSPLIT)
(WRDSO_NOCMDSPLIT): New options.
* src/wordsplit.c (scan_word): Treat any variable reference, even
containing whitespace, as a single word if WRDSO_NOVARSPLIT is set.
Ditto for commands and WRDSO_NOCMDSPLIT.
* tests/wordsplit.at: Add new tests.
* tests/wsp.c: Recognize novarsplit and nocmdsplit
options.
For future use: recognize bskeep_words, bskeep_quote, bskeep.
This commit is contained in:
Sergey Poznyakoff 2019-05-13 15:20:24 +03:00
parent 65d0759a8b
commit c01a4a61e8
4 changed files with 38 additions and 8 deletions
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11
include/wordsplit.h
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@ -201,9 +201,7 @@ struct wordsplit
#define WRDSO_FAILGLOB 0x00000002
/* Allow a leading period to be matched by metacharacters. */
#define WRDSO_DOTGLOB 0x00000004
#if 0 /* Unused value */
#define WRDSO_ARGV 0x00000008
#endif
/* Unused value: 0x00000008 */
/* Keep backslash in unrecognized escape sequences in words */
#define WRDSO_BSKEEP_WORD 0x00000010
/* Handle octal escapes in words */
@ -220,6 +218,13 @@ struct wordsplit
#define WRDSO_OESC_QUOTE 0x00000200
/* Handle hex escapes in quoted strings */
#define WRDSO_XESC_QUOTE 0x00000400
/* Unused: 0x00000800 */
/* Don't split variable references, even if they contain whitespace
(e.g. ${VAR:-foo bar}) */
#define WRDSO_NOVARSPLIT 0x00001000
/* Don't split commands, even containing whitespace, e.g.
$(echo foo bar) */
#define WRDSO_NOCMDSPLIT 0x00002000
#define WRDSO_BSKEEP WRDSO_BSKEEP_WORD
#define WRDSO_OESC WRDSO_OESC_WORD