linux - 为什么 ctags -R 。不为子目录中的源代码生成索引？

Question

当前目录:

[mirror@home libevent]$ ls
arc4random.c            bufferevent_sock.c     epoll.c                event_tagging.c      evutil.c           l                        Makefile.am         strlcpy-internal.h
autogen.sh              buffer_iocp.c          epoll_sub.c            evmap.c              evutil_rand.c      libevent_openssl.pc.in   Makefile.nmake      test
b                       changelist-internal.h  evbuffer-internal.h    evmap-internal.h     evutil_time.c      libevent.pc.in           minheap-internal.h  time-internal.h
buffer.c                ChangeLog              evconfig-private.h.in  evport.c             ht-internal.h      libevent_pthreads.pc.in  mm-internal.h       util-internal.h
bufferevent_async.c     ChangeLog-1.4          evdns.3                evrpc.c              http.c             LICENSE                  poll.c              whatsnew-2.0.txt
bufferevent.c           ChangeLog-2.0          evdns.c                evrpc-internal.h     http-internal.h    listener.c               ratelim-internal.h  whatsnew-2.1.txt
bufferevent_filter.c    compat                 event.3                evsignal-internal.h  include            log.c                    README              WIN32-Code
bufferevent-internal.h  configure.in           event.c                evthread.c           iocp-internal.h    log-internal.h           sample              win32select.c
bufferevent_openssl.c   defer-internal.h       event-internal.h       evthread-internal.h  ipv6-internal.h    m4                       select.c
bufferevent_pair.c      devpoll.c              event_iocp.c           evthread_pthread.c   kqueue.c           make_epoll_table.py      signal.c
bufferevent_ratelim.c   Doxyfile               event_rpcgen.py        evthread_win32.c     kqueue-internal.h  make-event-config.sed    strlcpy.c

测试目录下有一些文件:

[mirror@home libevent]$ ls test/
bench.c              Makefile.am            regress_dns.c   regress_listener.c  regress_ssl.c        regress_zlib.c     test-fdleak.c    test-time.c      tinytest_local.h
bench_cascade.c      Makefile.nmake         regress_et.c    regress_main.c      regress_testutils.c  rpcgen_wrapper.sh  test-init.c      test-weof.c      tinytest_macros.h
bench_http.c         regress_buffer.c       regress.h       regress_minheap.c   regress_testutils.h  test-changelist.c  test-ratelim.c   tinytest.c
bench_httpclient.c   regress_bufferevent.c  regress_http.c  regress.rpc         regress_thread.c     test-dumpevents.c  test-ratelim.sh  tinytest_demo.c
check-dumpevents.py  regress.c              regress_iocp.c  regress_rpc.c       regress_util.c       test-eof.c         test.sh   

test目录下有很多文件有main()函数:

[mirror@home libevent]$ find test/ -regex .*.c -exec grep main {} +
test/regress.c:struct testcase_t main_testcases[] = {
test/test-weof.c:main(int argc, char **argv)
test/regress_dns.c:/* FIXME: We should move this to regress_main.c if anything else needs it.*/
test/regress_buffer.c:  size_t remaining;
test/regress_buffer.c:  remaining = v[0].iov_len - 512;
test/regress_buffer.c:  tt_int_op(remaining, ==, v[0].iov_len);
test/regress_buffer.c:  remaining -= 8;
test/regress_buffer.c:  n = evbuffer_reserve_space(buf, remaining+64, v, 2);
test/regress_buffer.c:  tt_int_op(remaining, ==, v[0].iov_len);
test/regress_buffer.c:  remaining -= 1;
test/regress_buffer.c:  n = evbuffer_reserve_space(buf, remaining+64, v, 2);
test/regress_buffer.c:  tt_int_op(remaining, ==, v[0].iov_len);
test/regress_buffer.c:  /* Drain some of the remaining chunk, then add it to another buffer */
test/regress_main.c:    { "main/", main_testcases },
test/regress_main.c:main(int argc, const char **argv)
test/regress_main.c:    if (tinytest_main(argc,argv,testgroups))
test/tinytest.c:static int in_tinytest_main = 0; /**< true if we're in tinytest_main().*/
test/tinytest.c:        if (!in_tinytest_main) {
test/tinytest.c:                       " called from within tinytest_main.\n");
test/tinytest.c:tinytest_main(int c, const char **v, struct testgroup_t *groups)
test/tinytest.c:        ++in_tinytest_main;
test/tinytest.c:        --in_tinytest_main;
test/test-eof.c:main(int argc, char **argv)
test/test-ratelim.c:main(int argc, char **argv)
test/tinytest_demo.c:main(int c, const char **v)
test/tinytest_demo.c:   /* Finally, just call tinytest_main().  It lets you specify verbose
test/tinytest_demo.c:   return tinytest_main(c, v, groups);
test/test-time.c:main(int argc, char **argv)
test/bench_cascade.c:main(int argc, char **argv)
test/test-dumpevents.c:   remain in the future.
test/test-dumpevents.c:main(int argc, char **argv)
test/test-changelist.c:main(int argc, char **argv)
test/test-init.c:main(int argc, char **argv)
test/test-fdleak.c:main(int argc, char **argv)
test/bench_http.c:main(int argc, char **argv)
test/bench.c:main(int argc, char **argv)
test/bench_httpclient.c:main(int argc, char **argv)

但在我使用之后:

ctags -R .

打开vim，然后

:tag main
:g ] 

状态栏只显示:

E433: No tags file
E426: tag not found: main

怎么了？ 标签文件已经加载，为什么没有标签文件？令人困惑...

似乎由 ctags 生成的索引包含这些文件，其中包含主要功能:

3643 main    sample/dns-example.c    /^main(int c, char **v) {$/;"   f
3644 main    sample/event-read-fifo.c        /^main(int argc, char **argv)$/;"       f
3645 main    sample/hello-world.c    /^main(int argc, char **argv)$/;"       f
3646 main    sample/http-server.c    /^main(int argc, char **argv)$/;"       f
3647 main    sample/le-proxy.c       /^main(int argc, char **argv)$/;"       f
3648 main    sample/signal-test.c    /^main(int argc, char **argv)$/;"       f
3649 main    sample/time-test.c      /^main(int argc, char **argv)$/;"       f
3650 main    test/bench.c    /^main(int argc, char **argv)$/;"       f
3651 main    test/bench_cascade.c    /^main(int argc, char **argv)$/;"       f
3652 main    test/bench_http.c       /^main(int argc, char **argv)$/;"       f
3653 main    test/bench_httpclient.c /^main(int argc, char **argv)$/;"       f
3654 main    test/regress_main.c     /^main(int argc, const char **argv)$/;" f
3655 main    test/test-changelist.c  /^main(int argc, char **argv)$/;"       f
3656 main    test/test-dumpevents.c  /^main(int argc, char **argv)$/;"       f
3657 main    test/test-eof.c /^main(int argc, char **argv)$/;"       f
3658 main    test/test-fdleak.c      /^main(int argc, char **argv)$/;"       f
3659 main    test/test-init.c        /^main(int argc, char **argv)$/;"       f
3660 main    test/test-ratelim.c     /^main(int argc, char **argv)$/;"       f
3661 main    test/test-time.c        /^main(int argc, char **argv)$/;"       f
3662 main    test/test-weof.c        /^main(int argc, char **argv)$/;"       f
3663 main    test/tinytest_demo.c    /^main(int c, const char **v)$/;"       f
3664 main_callback   sample/dns-example.c    /^main_callback(int result, char type, int count, int ttl,$/;"  f       file:
3665 main_testcases  test/regress.c  /^struct testcase_t main_testcases[] = {$/;"    v       typeref:struct:testcase_t

但是为什么tag main,g]找不到包含main函数的文件列表呢？

即使启用了 autochdir，romainl 的解决方案也适用于 :tag name

我已经运行了 :set tags=./tags,tags，因为启用了 autochdir，即使当前目录更改为其他目录，它也能正常工作，但 g ] 有时可能无法工作，为什么？

但 g ] 有时不起作用:

错误信息是E257: cstag: tag not found

编辑 2:.vimrc 的内容

cat ~/.vimrc
set autoindent
colorscheme desert
set number

Answer 1

E433 错误意味着 Vim 没有找到您的 tags 文件，所以，不，tags 文件还没有加载。

键入 :set tags 应该输出如下内容:

./tags,tags

这是默认值，意思是“在当前目录中然后查找位于当前文件目录中的tags文件”。

因为您有set autochdir，所以您最终可能会进入一个没有tags 文件的目录。例如，在 test 中。

要确保 Vim 找到你的 tags 文件，你应该使用像这样的东西:

set tags=./tags,tags;$HOME

意思是“在当前目录then中的任何父目录中查找位于当前文件then目录下的tags文件直到 $HOME”。

编辑

好吧，上面的设置对我来说已经按预期工作了很长时间。但这是我刚刚做的小实验(当然是使用 set autochdir):

1. 我在 ~/workspace/accordion/ 中，其中仅包含一个文件 accordion.js。

2. 我执行 $ ctags -R .:~/workspace/accordion/tags 已创建。

3. 我做 $ mkdir -p aa/bb/cc/dd/ee/ff。

4. 我做 $ vim aa/bb/cc/dd/ee/ff/test.js。

5. 在 Vim 中，我执行 :tag *mini 跳转到 mini() 方法的声明，Accordion() 的成员 构造函数位于 ~/workspace/accordion/accordion.js 中，符合预期。

因为我的 ~/.vimrc 中有 set tags=./tags,tags;$HOME Vim 正确地从一个目录爬到另一个目录，直到它到达 ~/worspace/accordion/tags。即使我深陷在一个不切实际的深文件树中。

Is there an accordion/aa/bb/cc/dd/ee/ff/tags ? no, let's go up…
Is there an accordion/aa/bb/cc/dd/ee/tags ? no, let's go up…
Is there an accordion/aa/bb/cc/dd/tags ? no, let's go up…
Is there an accordion/aa/bb/cc/tags ? no, let's go up…
Is there an accordion/aa/bb/tags ? no, let's go up…
Is there an accordion/aa/tags ? no, let's go up…
Is there an accordion/tags ? yes! let's scan it!

正如另一位评论者反复问你但没有成功，当你在子目录中时 :pwd 的输出是什么？这是另一个请求::call tagfiles() 的输出是什么？