All reports of example-shell-script-fails-syntax-check for the archive. The extended description of this tag is:
Running this shell script with the shell's -n option set fails, which means that the script has syntax errors. The most common cause of this problem is a script expecting /bin/sh to be bash checked on a system using dash as /bin/sh.
Run e.g. sh -n yourscript to see the errors yourself.
Note this can have false-positives, for an example with bash scripts using "extglob".
This tag has not been emitted in any package tested by Lintian.