vimrc: add c/cpp/cuda completefunc for .vim/vimrc

root/.vim/autoload/noplug.vim

@@ -80,3 +80,33 @@ function noplug#SystemToQf(args)
 	cexpr system(a:args)
 	call s:ShowQuickfixListIfNotEmpty()
 endfunction
+
+function noplug#MyCppCompleteFunc(findstart, base)
+	if a:findstart
+		" 确定补全开始的位置
+		let line = getline('.')
+		let start = col('.') - 1
+		while start > 0 && line[start - 1] =~ '\S'
+			let start -= 1
+		endwhile
+		if line[start] != '<' && line[start] != '"'
+			return -3
+		endif
+		return start + 1
+	endif
+
+	if getline('.') =~# &include
+		let filetype = &filetype
+		if filetype == 'cpp' || filetype == 'cuda'
+			" r! ls -1 /usr/include/c++/13 | awk '{print " \x27"$0"\x27"}' | paste -sd,
+			let completions = ['algorithm', 'any', 'array', 'atomic', 'backward', 'barrier', 'bit', 'bits', 'bitset', 'cassert', 'ccomplex', 'cctype', 'cerrno', 'cfenv', 'cfloat', 'charconv', 'chrono', 'cinttypes', 'ciso646', 'climits', 'clocale', 'cmath', 'codecvt', 'compare', 'complex', 'complex.h', 'concepts', 'condition_variable', 'coroutine', 'csetjmp', 'csignal', 'cstdalign', 'cstdarg', 'cstdbool', 'cstddef', 'cstdint', 'cstdio', 'cstdlib', 'cstring', 'ctgmath', 'ctime', 'cuchar', 'cwchar', 'cwctype', 'cxxabi.h', 'debug', 'decimal', 'deque', 'exception', 'execution', 'expected', 'experimental', 'ext', 'fenv.h', 'filesystem', 'format', 'forward_list', 'fstream', 'functional', 'future', 'initializer_list', 'iomanip', 'ios', 'iosfwd', 'iostream', 'istream', 'iterator', 'latch', 'limits', 'list', 'locale', 'map', 'math.h', 'memory', 'memory_resource', 'mutex', 'new', 'numbers', 'numeric', 'optional', 'ostream', 'parallel', 'pstl', 'queue', 'random', 'ranges', 'ratio', 'regex', 'scoped_allocator', 'semaphore', 'set', 'shared_mutex', 'source_location', 'span', 'spanstream', 'sstream', 'stack', 'stacktrace', 'stdatomic.h', 'stdexcept', 'stdfloat', 'stdlib.h', 'stop_token', 'streambuf', 'string', 'string_view', 'syncstream', 'system_error', 'tgmath.h', 'thread', 'tr1', 'tr2', 'tuple', 'typeindex', 'typeinfo', 'type_traits', 'unordered_map', 'unordered_set', 'utility', 'valarray', 'variant', 'vector', 'version']
+			call filter(completions, 'v:val =~ "^" . a:base')
+		endif
+		" 使用getcompletion()获取文件类型的补全列表
+		echom a:base
+		let completions += getcompletion(a:base . '*.h*', 'file_in_path', 1)
+		let completions += getcompletion(a:base . '*/$', 'file_in_path', 1)
+		return completions
+	endif
+	return []
+endfunction

root/.vim/vimrc

@@ -1,6 +1,6 @@
 set number "显示行号
 if has('autocmd') " vim-tiny does not have autocmd
-	set nocp "no Vi-compatible
+	set nocp " no Vi-compatible
 	"""""""""""""""""""""" CONFIG """""""""""""""""""""""""""""""""
 
 	if filereadable(expand('~/.vim/config.vim'))
@@ -349,22 +349,19 @@ if has('autocmd') " vim-tiny does not have autocmd
 		helptags ~/.vim/doc
 	endif
 
-	" Load plugins, 可能改变g:no_plug的值
 	if s:has_vimrcd
 		source ~/.vim/vimrc.d/plugin.vim
 	endif
 
-	if !exists("g:plugs") || !has_key(g:plugs, 'coc.nvim')
+	if g:no_plug
 		" https://zhuanlan.zhihu.com/p/106309525
-		if has("autocmd") && exists("+omnifunc")
+		if exists("+omnifunc")
 			autocmd Filetype * if &omnifunc == "" | setlocal omnifunc=syntaxcomplete#Complete | endif
 		endif
+		autocmd FileType c,cpp,cuda setlocal completefunc=noplug#MyCppCompleteFunc
 	endif
 
-	""""""""""""""""""""" StatusLine """"""""""""""""""
-
-	" 设置状态行-----------------------------------
-	" 设置状态行显示常用信息
+	""""""""""""""""" StatusLine """"""""""""""""""
 	" %F 完整文件路径名
 	" %m 当前缓冲被修改标记
 	" %m 当前缓冲只读标记
@@ -380,7 +377,7 @@ if has('autocmd') " vim-tiny does not have autocmd
 	" %{...} 评估表达式的值，并用值代替
 	" %{"[fenc=".(&fenc==""?&enc:&fenc).((exists("+bomb") && &bomb)?"+":"")."]"} 显示文件编码
 	" %{&ff} 显示文件类型
-	" 链接：https://zhuanlan.zhihu.com/p/532430825
+	" See: https://zhuanlan.zhihu.com/p/532430825
 	set laststatus=2
 	if !has('nvim') || g:nvim_compatibility_with_vim == 1
 		set statusline=%1*%F%m%r%h%w\ \|\ 
@@ -408,21 +405,19 @@ if has('autocmd') " vim-tiny does not have autocmd
 	augroup END
 
 	""""""""""""""""""" Marks """"""""""""""""""""""
-
 	" 为小写字母 a 到 z 创建映射
 	for mark in range(char2nr('a'), char2nr('z'))
 		let sign_name = 'mark' . nr2char(mark)
 		execute 'nnoremap m' . nr2char(mark) . ' m' . nr2char(mark) . ':call marks#SignMark("' . sign_name . '")<CR>'
 	endfor
-
 	" 为大写字母 A 到 Z 创建映射
 	for mark in range(char2nr('A'), char2nr('Z'))
 		let sign_name = 'mark' . nr2char(mark)
 		execute 'nnoremap m' . nr2char(mark) . ' m' . nr2char(mark) . ':call marks#SignMark("' . sign_name . '")<CR>'
 	endfor
-	"""""""""""""""""""""""""""""""""""""""""""""""""""""""""
-	"
-	""""""""""""""""""" tag system """"""""""""""""""""""""""
+	""""""""""""""""""""""""""""""""""""""""""""""""
+
+	""""""""""""""""""" Tag System """""""""""""""""
 	" 当前使用.globalrc配置文件
 	" let $GTAGSCONF = '/root/gtags.conf'
 
@@ -431,7 +426,6 @@ if has('autocmd') " vim-tiny does not have autocmd
 
 	" 递归向上层寻找tags文件
 	" set tags=tags;/
-
 	if has("cscope")
 		" use both cscope and ctag for 'ctrl-]', ':ta', and 'vim -t'
 		set cscopetag
@@ -450,7 +444,6 @@ if has('autocmd') " vim-tiny does not have autocmd
 		" when it was compiled.  If it wasn't, time to recompile vim... 
 
 		""""""""""""" My cscope/vim key mappings
-		"
 		" The following maps all invoke one of the following cscope search types:
 		"
 		"   's'   symbol: find all references to the token under cursor
@@ -477,19 +470,18 @@ if has('autocmd') " vim-tiny does not have autocmd
 		" 分裂窗口显示搜索结果
 		" nmap <C-@>s :scs find s <C-R>=expand("<cword>")<CR><CR>
 		" nmap <C-@><C-@>s :vert scs find s <C-R>=expand("<cword>")<CR><CR>
-
 		if g:tag_system == 'cscope'
 			" Reference: https://cscope.sourceforge.net/cscope_maps.vim
 			""""""""""""" Standard cscope/vim boilerplate
 
 			" reset cscope:
 			" :cs reset
 
-			" add any cscope database in current directory
 			if filereadable("cscope.out")
+			" add any cscope database in current directory
 				cs add cscope.out
-			" else add the database pointed to by environment variable
 			elseif $CSCOPE_DB != ""
+			" else add the database pointed to by environment variable
 				cs add $CSCOPE_DB
 			endif
 
@@ -501,7 +493,6 @@ if has('autocmd') " vim-tiny does not have autocmd
 					" 自动加载gtags db
 					autocmd VimEnter * call tagsystem#GtagsCscopeAdd()
 				augroup END
-
 				" 不使用global官方gtags-cscope vimscript
 				" https://www.gnu.org/software/global/globaldoc_toc.html#Gtags_002dcscope
 				" source ~/.vim/vimrc.d/gtags-cscope.vim