--- busybox-1.18.2/shell/hush.c +++ busybox-1.18.2-hush/shell/hush.c @@ -4123,15 +4123,26 @@ static struct pipe *parse_stream(char ** && dest.length == 0 && !dest.has_quoted_part ) { /* This newline can be ignored. But... - * without the below check, interactive shell - * will ignore even lines with bare , - * and show the continuation prompt: + * Without check #1, interactive shell + * ignores even bare , + * and shows the continuation prompt: * ps1_prompt$ - * ps2> _ <=== wrong prompt, should be ps1 + * ps2> _ <=== wrong, should be ps1 + * Without check #2, "cmd & " + * is similarly mistreated. + * (BTW, this makes "cmd & cmd" + * and "cmd && cmd" non-orthogonal. + * Really, ask yourself, why + * "cmd && " doesn't start + * cmd but waits for more input? + * No reason...) */ struct pipe *pi = ctx.list_head; - if (pi->num_cmds != 0) + if (pi->num_cmds != 0 /* check #1 */ + && pi->followup != PIPE_BG /* check #2 */ + ) { continue; + } } /* Treat newline as a command separator. */ done_pipe(&ctx, PIPE_SEQ);