Cells pasted from clipboard's tables won't contain unnecessary line breaks

[wszymanski]

Context

The described bug also occurs for MacOS and Chrome browser. I've found a case which shows that problem. Finally, after a deeper investigation, I've discovered that it's not related only to Word files and tables inside them. The issue relates to how we parsed whitespaces as part of the HTML snippet. Word splits long text into a few lines for better readability. Until now, extra spaces (added to break text) have been preserved. That won't be done anymore. The only spaces are stored as &nbsp elements inside HTML elements, and we filter out other space characters.

How has this been tested?

Tested different tables with spaces at the start and the end of a single line/whole snippet.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature or improvement (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Additional language file or change to the existing one (translations)

Related issue(s):

1. https://github.com/handsontable/dev-handsontable/issues/1597

Affected project(s):

• handsontable
• @handsontable/angular
• @handsontable/react
• @handsontable/vue
• @handsontable/vue3

Checklist:

• I have reviewed the guidelines about Contributing to Handsontable and I confirm that my code follows the code style of this project.
• My change requires a change to the documentation.

[github-actions]

Launch the local version of documentation by running:

npm run docs:review 0da32502d5a0adfc5aade15601dac5a6d240ddfb

[jansiegel]

1. @magierg Unfortunately I'm not able to test it myself with MS Word, could I ask for your help with this?
2. @wszymanski it's not a breaking change, correct?
3. The code LGTM

[wszymanski]

2. @wszymanski it's not a breaking change, correct?

Correct.