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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-09-25 10:54:13 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2007-09-25 10:54:13 +0800 |
| commit | 170f44d00498bdb0e916e7efdc19a8d3489a381c (patch) | |
| tree | 04da3c8817e14c0ee2f87a30ee6ab12b0234e032 /src | |
| parent | [PARSER] Remove arithmetic expansion collapsing at parse time (diff) | |
| download | dash-170f44d00498bdb0e916e7efdc19a8d3489a381c.tar.gz dash-170f44d00498bdb0e916e7efdc19a8d3489a381c.zip | |
[EXPAND] Do not expand tilde in parameter expansion within quotes
Previously code was added so that tilde expansion was carried out
parameter expansions within double quotes. This change was made
with reference the behaviour of bash at the time. Bash has since
be fixed so that this behaviour no longer occurs which is in line
with most other POSIX shells.
So this patch removes that behaviour in dash as well.
Test case:
unset a
echo "${a:-~root}"
Old result:
/root
New result:
~root
Diffstat (limited to 'src')
| -rw-r--r-- | src/expand.c | 10 | ||||
| -rw-r--r-- | src/expand.h | 2 |
2 files changed, 4 insertions, 8 deletions
diff --git a/src/expand.c b/src/expand.c index 1443c14..c9f09ff 100644 --- a/src/expand.c +++ b/src/expand.c @@ -278,7 +278,7 @@ argstr(char *p, int flag) const char *reject = spclchars; int c; int quotes = flag & QUOTES_ESC; - int breakall = flag & EXP_WORD; + int breakall = (flag & (EXP_WORD | EXP_QUOTED)) == EXP_WORD; int inquotes; size_t length; int startloc; @@ -296,8 +296,6 @@ argstr(char *p, int flag) flag &= ~EXP_TILDE; tilde: q = p; - if (*q == (char)CTLESC && (flag & EXP_QWORD)) - q++; if (*q == '~') p = exptilde(p, q, flag); } @@ -780,10 +778,8 @@ again: if (subtype == VSMINUS) { vsplus: if (varlen < 0) { - argstr( - p, flag | EXP_TILDE | - (quoted ? EXP_QWORD : EXP_WORD) - ); + argstr(p, flag | EXP_TILDE | EXP_WORD | + (quoted ? EXP_QUOTED : 0)); goto end; } if (easy) diff --git a/src/expand.h b/src/expand.h index 6b7d607..be7ec6f 100644 --- a/src/expand.h +++ b/src/expand.h @@ -56,7 +56,7 @@ struct arglist { #define EXP_RECORD 0x20 /* need to record arguments for ifs breakup */ #define EXP_VARTILDE2 0x40 /* expand tildes after colons only */ #define EXP_WORD 0x80 /* expand word in parameter expansion */ -#define EXP_QWORD 0x100 /* expand word in quoted parameter expansion */ +#define EXP_QUOTED 0x100 /* expand word in double quotes */ union node; |