Vim's formatting/auto-indent in C++ class seems incorrect. is this normal?

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It seems there are many options in Vim for indenting c code with the cindent and cinoptions variables. I've made no modifications to these settings and I've tested this with a fresh install of Vim and with no vimrc. I can't seem to find an explanation for the following behavior:

If public is used on the first line in the class body, it appears to format the indentation correctly. Using gg=G formats the body like so:

class Thing
{
        public:
                int a;
};

But, if there's something above it, vim does not indent the line after the public keyword. Using gg=G formats the body like so:

class Thing
{
        int b;
        public:
        int a; //WHY is there no additional indentation level anymore???
};

Does anyone know why this occurs? It's driving me nuts.

Thank you!

indentation vim c++
1 Answers

Installing clang-format and using an autocmd solved my issue. Any new settings that I want to apply to c or c++ files can simply be added to the CPPFormatSettings function. Google's formatting makes the most sense to me, but there are 5 or 6 other styles to choose from. Changing to -style=microsoft will format the code to look more like classic C++ formatting with the brackets below the function definitions.

Here's what I've added to my vimrc:

fun! CPPFormatSettings()
  setlocal equalprg=clang-format\ -style=google
endfun

autocmd FileType c,cpp call CPPFormatSettings()
user_135055590
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