Config bug: `\#` in the prompt doesn’t work as advertised

[danielyli]

pgcli’s config says:

# Postgres prompt
# \# - "@" sign if logged in as superuser, '>' in other case

However, when using it, only a # shows in the prompt.

• [x] Please provide your OS and version information: macOS 12.2 Monterey
• [x] Please provide your CLI version: 3.3.1
• [x] What is the output of pip freeze command:

boto3==1.17.9
botocore==1.18.18
cachetools==4.2.1
certifi==2020.12.5
cffi==1.14.5
chardet==3.0.4
colorama==0.4.4
cryptography==3.4.6
dnspython==2.1.0
docker-pycreds==0.4.0
idna==2.6
jmespath==0.10.0
oauthlib==3.1.0
pyasn1==0.4.8
pyasn1-modules==0.2.8
pycparser==2.20
PyJWT==2.0.1
python-dateutil==2.8.1
requests==2.18.4
requests-oauthlib==1.3.0
rsa==4.5
s3transfer==0.3.4
six==1.16.0
tabulate==0.8.9
texttable==0.9.1
tqdm==4.62.3
urllib3==1.22
websocket-client==0.57.0