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" settings & syntax hilighting for FRR codebase
" 2019 by David Lamparter, placed in public domain
let c_gnu=1
function! CStyleFRR()
syn clear cFormat
syn match cFormat display "%\(\d\+\$\)\=[-+' #0*]*\(\d*\|\*\|\*\d\+\$\)\(\.\(\d*\|\*\|\*\d\+\$\)\)\=\([hlLjzt]\|ll\|hh\)\=\([aAbiuoxXDOUfFeEgGcCsSn]\|[pd]\([A-Z][A-Z0-9]*[a-z]*\|\)\|\[\^\=.[^]]*\]\)" contained
syn match cFormat display "%%" contained
syn keyword cIterator frr_each frr_each_safe frr_each_from
syn keyword cMacroOp offsetof container_of container_of_null array_size
syn keyword cStorageClass atomic
syn keyword cFormatConst PRId64 PRIu64 PRIx64
syn keyword cFormatConst PRId32 PRIu32 PRIx32
syn keyword cFormatConst PRId16 PRIu16 PRIx16
syn keyword cFormatConst PRId8 PRIu8 PRIx8
" you can unlink these by just giving them their own hilighting / color
hi link cFormatConst cFormat
hi link cIterator cRepeat
hi link cMacroOp cOperator
" indentation
setlocal cindent
setlocal cinoptions=:0,(0,u4,w1,W8
setlocal shiftwidth=8
setlocal softtabstop=0
setlocal textwidth=0
setlocal fo=croql
setlocal noet
endfunction
" auto-apply the above based on path rules
"autocmd BufRead,BufNewFile /home/.../frr/*.[ch] call CStyleFRR()
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