Web interface translates special characters into ' notation

[schuettecarsten]

When using special characters like ' or german Umlauts in the Comment fields in Web UI, these characters are translated into HTML notation like ' whenever you edit an existing line. Items are added correctly but comments get broken when you edit the lines.

Example:

Versions:

Core
    Version is 3f5c009 (Latest: null)
    Branch is development
    Hash is 3f5c0091 (Latest: 3f5c0091)
Web
    Version is ffdffbc (Latest: null)
    Branch is development
    Hash is ffdffbc2 (Latest: ffdffbc2)
FTL
    Version is vDev-27bea5b (Latest: null)
    Branch is development
    Hash is 27bea5b0 (Latest: 27bea5b0)

[rdwebdesign]

When using special characters like ' or german Umlauts ...

Are you sure other characters are replaced?

(Did you use Ä or Ü in the typed text?)

I can replicate only the apostrophe (') issue, but the other characters I tested (like accented letters and umlauts) are not changed.

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The apostrophe/quotes issue is happening because we are using the escapeHtml() function every time the field is edited.
This function replaces ' with the HTML entity '.
It also replaces & with &. This is causing double (triple and so on...) encoding:

' -> ' -> ' -> ' -> '

The multiple encoding issue only happens with &, ', ", < and >. No other characters will be replaced by this function.

[schuettecarsten]

I first saw it on the apostrophe, that's correct and after some changes, I also saw that the whole text was broken.
This might be caused by the multiple encodings of the & and not by the umlaut itself.