Josef Zahner created NIFI-15373:
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Summary: Realtime Syntax HIghlighting Behavior has changed in NiFi
2.6.0
Key: NIFI-15373
URL: https://issues.apache.org/jira/browse/NIFI-15373
Project: Apache NiFi
Issue Type: Bug
Components: Core UI
Affects Versions: 2.7.2, 2.7.1, 2.7.0, 2.6.0
Reporter: Josef Zahner
Attachments: image-2025-12-19-07-09-24-878.png,
image-2025-12-19-07-10-16-050.png
The Realtime property value syntax highlighting has been changed in NiFi >
2.5.0. Let me provide two different examples from NiFi 2.7.1: # Parameters are
not anymore checked at the time of writing whether they are valid, as soon as
you enter “#{" and type, the word will be automatically always coloured.
!image-2025-12-19-07-09-24-878.png|width=293,height=184!
# The same for NiFI Expression Language functions, as soon as you type
"{{{}${your-var:}{}}}" the function will be coloured and not only if it's a
valid function. In my example you can see that even {{bla() }}has been coloured
even thought it doesn't exists.
!image-2025-12-19-07-10-16-050.png|width=297,height=187!
This change/bug makes the endusers life really a lot more difficult as the live
check is missing. You always have to press "Ok" and "Validate" or "Apply" to
see whether the statement was correct or not.
The answer from [~mcgilman] in Slack to this behaviour was the following:
"{_}This is a consequence of {color:#de350b}*migrating to the latest version of
Codemirror*{color} (see Jira Link below). Previously we were on a legacy
version that needed to be migrated to a new major version. We are now on the
latest major version and it has replaced syntax highlighting from a character
streaming API to a lezer grammar that is compiled at build time.
{color:#de350b}*Support for valid tokens at runtime would need to further
evaluation.*{color}{_}{color:#de350b} *"*{color}
We would really appreciate if the behaviour on the newest NiFi versions would
be the same as in earlier versions.
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