linux - Detecting file type for C++ standard headers with vim -


standard headers c++ typically installed in /usr/include/c++/4.x (in linux). since of headers not have extension (.h, .hpp, etc.), vim cannot recognize format these files c++.

i have seen other question in so, solutions posted in there not solve problem. 1 solution there involves using modeline standard c++ headers not include vim-friendly signature. instead, include in first line like:

// <algorithm> -*- c++ -*-

i guess search pattern (-*- c++ -*-) in order detect file type. other solution posted in mentioned question goes in direction. answer suggests use:

au bufread * if search('magicpattern', 'nw') | setlocal ft=cpp | endif

so have tried do:

au bufread * if search('-*- c++ -*-', 'nw') | setlocal ft=cpp | endif

but not work (i.e., file type not detected).

is possible detect file type using approach? exist plugin or other way solve this?

n.m's answer trick, better:

au bufread * if search('\m-*- c++ -*-', 'n', 1) | setlocal ft=cpp | endif

the argument search stopline, , ensures rule applied files pattern in line 1.

this important because, without stopline files contain pattern, including vimrc, satisfy match , potentially highlighted using wrong syntax rules.

also, using stopline w flag unnecessary.

look @ :help search more information.


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