values of user variables get lost after end of scan

[fbach]

When I initialize a user variable and iteratively change its value during a scan, the value assignment gets lost after the end of the scan (cf. foo.sin attached).

[sschmidt]

Isn't this the same as #410 (Variable scoping in scan) ?

[kilian]

This is intended. User variable set inside braces are local and should not be remembered.

The reason is that scans should be executable in parallel, e.g., on a cluster. We had this design decision a while ago. I know about the lack of serial non-braced loops, this is part of the Sindarin revision that was too large to be implemented last fall.