Describe the request

When saving, automatically replace any spaces in the selected filename with dashes or underscores.

Describe the current behavior

There are specific restrictions on sketch names:

https://arduino.github.io/arduino-cli/dev/sketch-specification/#sketch-folders-and-files

If the user specifies a non-compliant name in the "Save As..." dialog (e.g., foo bar), Arduino IDE displays a dialog:

Invalid sketch folder name: 'foo bar'

The name must start with a letter, number, or underscore, followed by letters, numbers, dashes, dots and underscores. Maximum length is 63 characters.

Do you want to try saving the sketch with a different name?

The user then tries saving a again with a compliant name.

Arduino IDE version

• 2.3.7
• nightly

Operating system

Windows

Operating system version

11

Additional context

Arduino IDE 1.x has the requested behavior.

Additional requests

• https://forum.arduino.cc/t/why-do-i-get-an-invalid-sketch-folder-name-message/1096469/5
• https://forum.arduino.cc/t/code-check-invalid-name/1346662

Issue checklist

• I searched for previous requests in the issue tracker
• I verified the feature was still missing when using the latest nightly build
• My request contains all necessary details