[cfe-dev] [clang-format] Typedef declaration alignment

[Valentino Picotti via cfe-dev]

Hi everybody,

I was wondering why clang-format does not align consecutive typedef as one might expect.
As an example, what i except from the following code:
    
    typedef hash_table_iterator<T, key_type, hash_type> iterator;
    typedef hash_table_iterator<T, key_type, hash_type, true> const_iterator;
    typedef std::pair<key_type, T> value_type;

is an alignment like (when the option AlignConsecutiveDeclarations is true):
    
    typedef hash_table_iterator<T, key_type, hash_type>         iterator;
    typedef hash_table_iterator<T, key_type, hash_type, true> const_iterator;
    typedef std::pair<key_type, T>                                             value_type;

but no change is applied by clan-format.

Looking at the code, what prevents the formatting is the number of commas found before the “declaration name”, i.e. iterator, const_iterator and value_type. If the number of commas changes from one declaration to the next one, the sequence of declaration to align is interrupted.

Is this behavior intentional?

Valentino Picotti