expand: Merge syntax/quotes in memtodest with flags

The function arguments syntax and quotes are both derived from
the expansion flags.  As syntax is only used by memtodest we do
not need to maintain it outside of the function at all.

The only place that uses something other than BASESYNTAX or DQSYNTAX
is exptilde.  However in that case DQSYNTAX has exactly the same
effect as SQSYNTAX.

This patch merges these two arguments into a single flags.  The
macro QUOTES_KEEPNUL has been renamed to EXP_KEEPNUL in order
to keep the namespace separate.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/expand.h b/src/expand.h
index 90f5328..617b851 100644
--- a/src/expand.h
+++ b/src/expand.h
@@ -58,6 +58,7 @@ struct arglist {
 #define EXP_VARTILDE2	0x40	/* expand tildes after colons only */
 #define EXP_WORD	0x80	/* expand word in parameter expansion */
 #define EXP_QUOTED	0x100	/* expand word in double quotes */
+#define EXP_KEEPNUL	0x200	/* do not skip NUL characters */
 
 
 union node;