diff options
Diffstat (limited to 'shell/hush.c')
| -rw-r--r-- | shell/hush.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/shell/hush.c b/shell/hush.c index 3afb70cb0..523fc1a31 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -83,7 +83,7 @@ * Status of [[ support: * [[ args ]] are CMD_SINGLEWORD_NOGLOB: * v='a b'; [[ $v = 'a b' ]]; echo 0:$? - * [[ /bin/* ]]; echo 0:$? + * [[ /bin/n* ]]; echo 0:$? * TODO: * &&/|| are AND/OR ops, -a/-o are not * quoting needs to be considered (-f is an operator, "-f" and ""-f are not; etc) @@ -1426,8 +1426,19 @@ static char *unbackslash(char *src) { char *dst = src = strchrnul(src, '\\'); while (1) { - if (*src == '\\') + if (*src == '\\') { src++; + if (*src != '\0') { + /* \x -> x */ + *dst++ = *src++; + continue; + } + /* else: "\<nul>". Do not delete this backslash. + * Testcase: eval 'echo ok\' + */ + *dst++ = '\\'; + /* fallthrough */ + } if ((*dst++ = *src++) == '\0') break; } @@ -5392,16 +5403,17 @@ static struct pipe *parse_stream(char **pstring, continue; /* get next char */ case '\\': /*nommu_addchr(&ctx.as_string, '\\'); - already done */ + o_addchr(&ctx.word, '\\'); ch = i_getch(input); if (ch == EOF) { - /* Ignore this '\'. Testcase: eval 'echo Ok\' */ -#if !BB_MMU + /* Testcase: eval 'echo Ok\' */ + +#if 0 /* bash-4.3.43 was removing backslash, but 4.4.19 retains it, most other shells too */ /* Remove trailing '\' from ctx.as_string */ ctx.as_string.data[--ctx.as_string.length] = '\0'; #endif continue; /* get next char */ } - o_addchr(&ctx.word, '\\'); /* Example: echo Hello \2>file * we need to know that word 2 is quoted */ |