How to make Vim indent C++11 lambdas correctly?
Posted on In QAVim seems not indent C++11 lambas very well. How to make Vim indent C++11 lambdas correctly?
For this following program, Vim indents it as
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
int main ()
{
std::vector<std::string> strs({"one", "two"});
std::vector<std::string> newstrs;
std::transform(strs.begin(), strs.end(), std::back_inserter(newstrs), [](const std::string& s) -> std::string {
if (s == "one") {
return "1";
} else if (s == "two") {
return "2";
} else {
return s;
}
});
return 0;
}
The C++ lambda is indented incorrectly by Vim. The lambda function should be indented like
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
int main ()
{
std::vector<std::string> strs({"one", "two"});
std::vector<std::string> newstrs;
std::transform(strs.begin(), strs.end(), std::back_inserter(newstrs), [](const std::string& s) -> std::string {
if (s == "one") {
return "1";
} else if (s == "two") {
return "2";
} else {
return s;
}
});
return 0;
}
You may add these lines to your vimrc for C/C++ to indent lambdas correctly as you listed above
setlocal cindent
" handle lambda correctly
setlocal cino=j1,(0,ws,Ws
The key is setting cino
(cinoption) to be j1,(0,ws,Ws
. jN
is new in Vim 7.4 for “indent Java anonymous classes correctly” which improves C/C++ lambda indenting too.
Check my vimrc as an example.