readTextValueString does not support formed (\f).

[PaulKlint]

Describe the bug

The formfeed character (denoted by \f) is not supported by readTextValueString.

To Reproduce

Steps to reproduce the behavior:

rascal>import ValueIO;
ok
rascal>readTextValueString("\"\\n\"");
value: "\n"
rascal>readTextValueString("\"\\f\"");
value: "102"         <=== expected: "\f"

[PaulKlint]

It seems that StandardTextReader.readString does support \f.

A related observation: org.rascalmpl.values.parsetrees.SymbolFactory.char2int doesn't not support it (and I assume it should).

[DavyLandman]

This bug has been fixed in the latest vallang, (see usethesource/vallang#268 and usethesource/vallang#270), fixed in this commid.

So I assume this was in a version of Rascal that was running an older version of vallang.

However, the org.rascalmpl.values.parsetrees.SymbolFactory.char2int is a omission.

[DavyLandman]

Solved in #2135