No output when using stdin

[varac]

For bugs

• My shellcheck version (shellcheck --version or "online"): 0.6.0 (installed with stack intall ShellCheck) today

Here's a snippet or screenshot that shows the problem:

#!/bin/bash

set -euo pipefail

file_last_retag="$HOME/.offlineimap/Mail/.notmuch/last_retag"

# Before we sync via IMAP we need to move re-tagged mails
/home/varac/.local/bin/afew -m

. /home/varac/bin/include.d/check_connectivity

# fetch mail
timeout 2m ~/bin/old/offlineimap_concurrent.sh

# retag
if [ -f "$file_last_retag" ]
then
  rev_last_retag=$(tail -1 "$file_last_retag" | tr -d '\0' | cut -f4)
else
  rev_last_retag=0
fi

if ! [[ $rev_last_retag =~ ^[0-9]+$ ]]
then
  echo "Warning - Can't read last notmuch offset from $file_last_retag - Exiting."
  exit 1
fi

rev_lastmod=$(notmuch count --lastmod | cut -f3)
notmuch tag +new lastmod:"${rev_last_retag}..${rev_lastmod}"
notmuch new

# lastmod has changed after tagging
rev_lastmod=$(notmuch count --lastmod)
echo -e "$(date +%Y-%m-%d-%H:%M:%S)\t${rev_lastmod}" >> ~/.offlineimap/Mail/.notmuch/last_retag

notmuch address --format=sexp --output=recipients --deduplicate=address query:from-me > ~/.config/notmuch/addresses

Here's what shellcheck currently says:

Pointing shellcheck to the file directly shows one issue;

 ~/bin $ shellcheck -s bash ~/bin/fetch-mail.sh       

In /home/varac/bin/fetch-mail.sh line 10:
. /home/varac/bin/include.d/check_connectivity
  ^-- SC1091: Not following: /home/varac/bin/include.d/check_connectivity was not specified as input (see shellcheck -x).

For more information:
  https://www.shellcheck.net/wiki/SC1091 -- Not following: /home/varac/bin/in...

When using stdin (like Vim ALE does) fails to show the issue:

 ~/bin $ shellcheck -s bash -x - < ~/bin/fetch-mail.sh
 ~/bin $

Here's what I wanted or expected to see:

[varac]

Damnit, my fault

[juanje]

@varac what was your fault?

I have exactly the same problem you describe and I can't find what is the issue. Neither of these ways work for me (version: 0.7.0):

$ cat script.sh | shellcheck -

nor

$ shellcheck - < script.sh

I'll appreciate if you could tell me if you did find something missing or wrong there.
Thanks.