Tags it returns empty results

[mikezaby]

When i run Tags even if i have compiled the tags manualy or let the fzf create it, i have no results.

I am using vim in debian testing

VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Aug 17 2015 03:37:50)
Included patches: 1-826

[junegunn]

What is the output of :echo tagfiles()?

[mikezaby]

The output is ['tags']
Also the tag mechanism is working with the default vim behavior like ctrl+}

[junegunn]

Maybe the file is empty. Can you open it and see if it contains the tags you want?

[mikezaby]

I think the tags file is ok.
I create a dummy project for this purpose: https://github.com/mikezaby/fzf-test.
The tag file: https://raw.githubusercontent.com/mikezaby/fzf-test/master/tags

For example: I am in app/controllers/articles_controller.rb, if i press ctrl+} in line 7 Article, it opens correctly the app/model/article.rb, but the :Tags is empty.

[junegunn]

Alright, can you check if this command works? It's what Tags command does internally.

perl -ne 'unless (/^!/) { s/^(.*?)\t(.*?)\t/\x1b[33m\1\x1b[m\t\x1b[34m\2\x1b[m\t/; print }' tags

[mikezaby]

It seems to work, a small sample of the output

zip /home/miza/.rvm/gems/ruby-2.2.0/gems/sass-3.4.18/lib/sass/script/functions.rb   /^    def zip(*lists)$/;"   f
zone    /home/miza/.rvm/gems/ruby-2.2.0/gems/activesupport-4.2.4/lib/active_support/core_ext/time/zones.rb  /^    def zone$/;"  f   class:Time
zone    /home/miza/.rvm/gems/ruby-2.2.0/gems/activesupport-4.2.4/lib/active_support/time_with_zone.rb   /^    def zone$/;"  f   class:ActiveSupport.TimeWithZone
zone=   /home/miza/.rvm/gems/ruby-2.2.0/gems/activesupport-4.2.4/lib/active_support/core_ext/time/zones.rb  /^    def zone=(time_zone)$/;"  f   class:Time
zone_identifiers    /home/miza/.rvm/gems/ruby-2.2.0/gems/tzinfo-1.2.2/lib/tzinfo/country.rb /^    def zone_identifiers$/;"  f   class:TZInfo.Country
zone_identifiers    /home/miza/.rvm/gems/ruby-2.2.0/gems/tzinfo-1.2.2/lib/tzinfo/country_info.rb    /^    def zone_identifiers$/;"  f   class:TZInfo.CountryInfo
zone_identifiers    /home/miza/.rvm/gems/ruby-2.2.0/gems/tzinfo-1.2.2/lib/tzinfo/ruby_country_info.rb   /^    def zone_identifiers$/;"  f   class:TZInfo.RubyCountryInfo
zone_identifiers    /home/miza/.rvm/gems/ruby-2.2.0/gems/tzinfo-1.2.2/lib/tzinfo/zoneinfo_country_info.rb   /^    def zone_identifiers$/;"  f   class:TZInfo.ZoneinfoCountryInfo
zone_info   /home/miza/.rvm/gems/ruby-2.2.0/gems/tzinfo-1.2.2/lib/tzinfo/country.rb /^    def zone_info$/;" f   class:TZInfo.Country
zones   /home/miza/.rvm/gems/ruby-2.2.0/gems/tzinfo-1.2.2/lib/tzinfo/country.rb /^    def zones$/;" f   class:TZInfo.Country
zones   /home/miza/.rvm/gems/ruby-2.2.0/gems/tzinfo-1.2.2/lib/tzinfo/country_info.rb    /^    def zones$/;" f   class:TZInfo.CountryInfo
zones   /home/miza/.rvm/gems/ruby-2.2.0/gems/tzinfo-1.2.2/lib/tzinfo/ruby_country_info.rb   /^    def zones$/;" f   class:TZInfo.RubyCountryInfo
zones   /home/miza/.rvm/gems/ruby-2.2.0/gems/tzinfo-1.2.2/lib/tzinfo/zoneinfo_country_info.rb   /^    def zones$/;" f   class:TZInfo.ZoneinfoCountryInfo
zones_map   /home/miza/.rvm/gems/ruby-2.2.0/gems/activesupport-4.2.4/lib/active_support/values/time_zone.rb /^      def zones_map #:nodoc:$/;"  f   class:ActiveSupport.TimeZone
|   /home/miza/.rvm/gems/ruby-2.2.0/gems/json-1.8.3/lib/json/generic_object.rb  /^    def |(other)$/;"  f   class:JSON

[mikezaby]

I tried also grep -v '^!' tags that works

[junegunn]

Hmm, which version of fzf do you have? fzf --version

[mikezaby]

I did a plug update now, and still has the same problem.
fzf version: '0.10.7'
Now if i run :Tags and after quit the vim, i saw this error

Unknown regexp modifier "/e" at -e line 1, at end of line
Unknown regexp modifier "/v" at -e line 1, at end of line
syntax error at -e line 1, near "/) "
syntax error at -e line 1, near ";}"
Execution of -e aborted due to compilation errors.

[junegunn]

Ah, I just realized that I see the same error when I run the bang-version, :Tags!. Works fine with tmux though. I'll see what I can do.

[junegunn]

I think it should be fixed now. Please update and try again.

[mikezaby]

Yes, it works now. Thanks

[micalexander]

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This is also the case for me. :Tags command returns empty results. There is a tags file generated in the root already but I get nothing.

0/0
Tags>

I am currently running Neovim on Alpine Linux with Python3.

I do not have Perl so the following command is not available in the neovim version I have. I did not think I needed Pearl to run neovim.

perl -ne 'unless (/^!/) { s/^(.?)\t(.?)\t/\x1b[33m\1\x1b[m\t\x1b[34m\2\x1b[m\t/; print }' tags

When I run :Files I do get results but it is only when I have FZF_DEFAULT_COMMAND set. I was under the impression that it would give me results even if that Environment variable was not set.

And yes I can reproduce the problem with

vim -Nu <(curl https://gist.githubusercontent.com/junegunn/6936bf79fedd3a079aeb1dd2f3c81ef5/raw)

[junegunn]

@micalexander

Neovim does not require perl, but Tags command of this plugin requires perl. You can install perl, or send me a pull request that removes perl dependency.

When I run :Files I do get results but it is only when I have FZF_DEFAULT_COMMAND set. I was under the impression that it would give me results even if that Environment variable was not set.

It should. You might want to test fzf on your terminal first. Also check if the default command runs fine on it. https://github.com/junegunn/fzf/blob/master/src/constants.go#L55

[micalexander]

@junegunn same thing in the terminal. Running fzf without the FZF_DEFAULT_COMMAND variable set does nothing. Running

find -L . -mindepth 1 \( -path '*/\.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \) -prune -o -type f -print -o -type l -print 2> /dev/null | cut -b3-

Does nothing.

[junegunn]

It's a valid command. You'll have to figure out why it doesn't run on your system.

[micalexander]

So thanks for your help. The :Tags command was, of course, perl needing to be installed. The issue with the FZF_DEFAULT_COMMAND variable needing to be set explicitly for fzf to work (in the command line and the :Files command in vim), was that alpine linux's version of find is limited so I needed to install the gnu version of find in order for it to work.

apk add --update-cache findutils

I appreciate your work and look forward to using fzf more, with and without vim.

[junegunn]

Thanks, I'll see if I can make fzf print error messages in those cases.

[junegunn]

See:

• 55f6bc8
• junegunn/fzf@07ef2b0

[micalexander]

@junegunn Boss! Would be nice to get it added to the readme. But thanks just the same.