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| author | Denys Vlasenko | 2018-08-04 22:25:28 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2018-08-04 22:25:28 +0200 |
| commit | c2aa218f23a4e952746ebef7bb86668c6255471c (patch) | |
| tree | 6a2884b85c52a31ad9b69e7bd2cde5d688fa139e /shell/hush.c | |
| parent | 2005d3ff3661220f11e8ff1911b24051b3669566 (diff) | |
| download | busybox-c2aa218f23a4e952746ebef7bb86668c6255471c.zip busybox-c2aa218f23a4e952746ebef7bb86668c6255471c.tar.gz | |
ash,hush: properly handle ${v//pattern/repl} if pattern starts with /
Closes 2695
function old new delta
parse_dollar 762 790 +28
subevalvar 1258 1267 +9
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 37/0) Total: 37 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'shell/hush.c')
| -rw-r--r-- | shell/hush.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/shell/hush.c b/shell/hush.c index 6852b5f..3407711 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -4930,6 +4930,15 @@ static int parse_dollar(o_string *as_string, end_ch = '}' * 0x100 + '/'; } o_addchr(dest, ch); + /* The pattern can't be empty. + * IOW: if the first char after "${v//" is a slash, + * it does not terminate the pattern - it's the first char of the pattern: + * v=/dev/ram; echo ${v////-} prints -dev-ram (pattern is "/") + * v=/dev/ram; echo ${v///r/-} prints /dev-am (pattern is "/r") + */ + if (i_peek(input) == '/') { + o_addchr(dest, i_getch(input)); + } again: if (!BB_MMU) pos = dest->length; |