Whitespace in index

[cpplearner]

Sometimes the normal whitespace is used inside \indextext{}, sometimes the special character ~ is used. E.g. class.tex line 119:

\indextext{access control!\idxcode{union} default member}%

class.tex line 1363:

\indextext{access~control!anonymous \tcode{union}}%

This results in two index entries named "access control" appearing in the general index.

[Eelis]

This particular one was fixed by #942

[tkoeppe]

Duplicate of #1064.