Minor UI wording improvement: SearchAll Error to provide widely understandable feedback

[ilippert]

JabRef 5.3--2020-12-28--020cc97
Linux 5.9.16-200.fc33.x86_64 amd64
Java 15.0.1

• Mandatory: I have tested the latest development version from http://builds.jabref.org/master/ and the problem persists

Steps to reproduce the behavior:

1. select Web Search provider SearchAll
2. Copy The Neoliberal Politics of “Smart” into search field

Effect:
the field turns red. I have to remove the quotation marks to not have a red field.

[eludif]

That seems to be a feature. 🙂 See #6805

Hovering over the text input provides more information regarding the error.

[ilippert]

Thanks for the screenshot. I can now identify this "feature".

Here is a suggestion for improvement
In the message This query uses unsupported syntax, complement syntax with the specific syntax that needs to be changed. The current message leaves the user wildly guessing.

[koppor]

In the current version, this query returns results.

Nevertheless, we added an initial query syntax validation at #7809.

[ilippert]

In the current version, this query returns results.

confirmed with
JabRef 5.3--2021-05-31--edb8df5
Linux 5.12.8-300.fc34.x86_64 amd64
Java 16.0.1
JavaFX 16+8

[koppor]

[ilippert]

I like the wording "Invalid query element 'X". I am not sure non-techy users get the "at position 12" when they have a longer string.

Much more tricky perhaps: could the red background be restricted to the invalid query element?