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| author | Denys Vlasenko | 2018-01-09 17:25:58 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2018-01-09 17:25:58 +0100 |
| commit | d1df1a709f05a737d2477a08eea8c743e83f8f8f (patch) | |
| tree | 090d99fabe279d87b491f4b4634a2b7e0e3c09c2 | |
| parent | 740058b42bbfdab225706f8284e8d72b74a5df3b (diff) | |
| download | busybox-d1df1a709f05a737d2477a08eea8c743e83f8f8f.zip busybox-d1df1a709f05a737d2477a08eea8c743e83f8f8f.tar.gz | |
ash: add comment explaining last change
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | shell/ash.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/shell/ash.c b/shell/ash.c index 5381f34..83a8e77 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -6756,6 +6756,10 @@ subevalvar(char *p, char *varname, int strloc, int subtype, // p, varname, strloc, subtype, startloc, varflags, quotes); #if BASH_PATTERN_SUBST + /* For "${v/pattern/repl}", we must find the delimiter _before_ + * argstr() call expands possible variable references in pattern: + * think about "v=a; a=a/; echo ${v/$a/r}" case. + */ repl = NULL; if (subtype == VSREPLACE || subtype == VSREPLACEALL) { /* Find '/' and replace with NUL */ @@ -6770,11 +6774,8 @@ subevalvar(char *p, char *varname, int strloc, int subtype, *repl = '\0'; break; } - if ((unsigned char)*repl == CTLESC - && repl[1] - ) { + if ((unsigned char)*repl == CTLESC && repl[1]) repl++; - } repl++; } } @@ -6941,11 +6942,10 @@ subevalvar(char *p, char *varname, int strloc, int subtype, if (!repl) { //bb_error_msg("str9:'%s' slash_pos:%d", str, slash_pos); + repl = nullstr; if (slash_pos >= 0) { repl = str + slash_pos; *repl++ = '\0'; - } else { - repl = nullstr; } } //bb_error_msg("str:'%s' repl:'%s'", str, repl); |