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Re: Negation in a condition triggers error message
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From: |
Adam Vodopjan |
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Subject: |
Re: Negation in a condition triggers error message |
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Date: |
Fri, 16 Jun 2023 14:52:53 +0300 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.12.0 |
> It looks like the error is shown only when the whole condition is true,
assuming that the non-number argument is evaluated as 0.
Indeed, here is what I see in grub-core/commands/test.c
426 static grub_err_t
427 grub_cmd_test (grub_command_t cmd __attribute__ ((unused)),
428 int argc, char **args)
429 {
430 int argn = 0;
431
432 if (argc >= 1 && grub_strcmp (args[argc - 1], "]") == 0)
433 argc--;
434
435 return test_parse (args, &argn, argc) ? GRUB_ERR_NONE
436 : grub_error (GRUB_ERR_TEST_FAILURE, N_("false"));
437 }
It discards any error messages in case test_parse() returns true