From 4c80f29edd33cc613d01c5e93dde380b98d3c20c Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Mon, 3 Feb 2014 13:21:03 -0700 Subject: [PATCH] cmd_test: check for binary operators before unary This better mirrors the behaviour of bash, for example: $ if test -z = -z; then echo yes; else echo no; fi yes This is parsed as a string comparison of "-z" and "-z", since the check for the binary "=" operator occurs first. Without this change, the command would be parsed as a -z test of "-", followed by a syntax error; a trailing -z without and operand. This is a behavioural change, but I believe any commands affected were previously invalid or bizarely formed. Signed-off-by: Stephen Warren --- common/cmd_test.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/common/cmd_test.c b/common/cmd_test.c index 69b1b4cee6..e65dd53187 100644 --- a/common/cmd_test.c +++ b/common/cmd_test.c @@ -39,10 +39,6 @@ const struct { int op; int adv; } op_adv[] = { - {0, "-o", OP_OR, 1}, - {0, "-a", OP_AND, 1}, - {0, "-z", OP_STR_EMPTY, 2}, - {0, "-n", OP_STR_NEMPTY, 2}, {1, "=", OP_STR_EQ, 3}, {1, "!=", OP_STR_NEQ, 3}, {1, "<", OP_STR_LT, 3}, @@ -53,6 +49,10 @@ const struct { {1, "-le", OP_INT_LE, 3}, {1, "-gt", OP_INT_GT, 3}, {1, "-ge", OP_INT_GE, 3}, + {0, "-o", OP_OR, 1}, + {0, "-a", OP_AND, 1}, + {0, "-z", OP_STR_EMPTY, 2}, + {0, "-n", OP_STR_NEMPTY, 2}, }; static int do_test(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -- 2.39.2