Updated SC2293 (markdown)

SC2293.md

@@ -1,49 +1,29 @@
-## bats: ! \<command> will never fail the test
+## When eval'ing @Q-quoted words, use * rather than @ as the index.
 
 ### Problematic code:
 
 ```sh
-#!/usr/bin/env bats
-
-@test "test" {
-    # ... code
-    ! test_file_exists
-    # ... more code
-}
+eval "$MYCOMMAND ${@@Q}"
 ```
 
 ### Correct code:
 
 ```sh
-#!/usr/bin/env bats
-
-@test "test" {
-    # ... code
-    run ! test_file_exists
-    # ... more code
-}
+eval "$MYCOMMAND ${*@Q}"
 ```
 
 ### Rationale:
 
-Bats uses `set -e` and `trap ERR` to catch test failures as early as possible.
-Although the return code of a `!` negated command is inverted, they will never trigger `errexit`, due to a bash design decision (see [Related Resources](#related-resources)).
-This means that tests which use `!` can never fail.
+ShellCheck noticed that you are calling `eval` and including an escaped array. However, the array is passed as multiple arguments and relies on being implicitly joined together to form a single shell string, which `eval` can then evaluate.
 
-Starting with bats 1.5.0 you can use `!` inside `run`.
-If you are still using an older bats version, you can rewrite `! <command>` to `<command> && exit 1`.
+Instead, prefer building your shell string with explicit string concatenation by using `*` instead of `@` for the index, such as `${*@Q}` or `${array[*]@Q}`.
+
+This suggestion is equivalent to [[SC2124]], but for `eval` arguments rather than string variables.
 
 ### Exceptions:
 
-The return code of the last command in the test will be the exit code of the test function.
-This means that you can use `! <command>` on the last line of the test and it will still fail appropriately.
-However, you are encouraged to still use `run !` in this case for consistency.
-
-Shellcheck won't emit this error when using `! <command>` as last command in a test to avoid confusing users whose tests work as intended.
+None.
 
 ### Related resources:
 
-* [SC2251: This ! is not on a condition and skips errexit](SC2251.md)
-* [Stackoverflow: Why do I need parenthesis In bash `set -e` and negated return code](https://stackoverflow.com/a/39582012/760746)
-* [bash manpage](https://linux.die.net/man/1/bash) (look at `trap [-lp] [[arg] sigspec ...]`):  
-   > The ERR trap is not executed [...] if the command's return value is being inverted via !
+* Help by adding links to BashFAQ, StackOverflow, man pages, POSIX, etc!