Add Tselect command to filter matching tags

autoload/fzf/vim.vim

@@ -942,6 +942,49 @@ function! fzf#vim#tags(query, ...)
   \ 'options': extend(opts, ['--nth', '1..2', '-m', '--tiebreak=begin', '--prompt', 'Tags> ', '--query', a:query])}, a:000)
 endfunction
 
+" ------------------------------------------------------------------
+" Tselect
+" ------------------------------------------------------------------
+function! s:tselect_sink(query, lines)
+  if len(a:lines) < 2
+    return
+  endif
+  let cmd = s:action_for(a:lines[0], '')
+  let count = split(a:lines[1])[0]
+  if !empty(cmd)
+    execute cmd
+  endif
+  execute count . 'tag' a:query
+endfunction
+
+function! fzf#vim#tselect(query, ...)
+  let stack = gettagstack()
+  let tagstack_head = stack.length != 0 ? stack.items[-1].tagname : ""
+  let query = empty(a:query) ? tagstack_head : a:query
+  if empty(query)
+    echohl Error
+    echo "E73: tag stack empty"
+    echohl None
+    return
+  else
+
+  let tags = map(taglist('^' . query . '$', expand('%:p')), {i, v ->
+  \ [i + 1, get(v, 'filename', ''), get(v, 'class', ''), get(v, 'cmd', '')]})
+
+  let source = map(s:align_lists(tags), 'join(v:val, " ")')
+  if empty(source)
+    echohl Error
+    echo "E426: tag not found: " . query
+    echohl None
+    return
+  endif
+
+  return s:fzf('tselect', {
+  \ 'source':  source,
+  \ 'sink*':   function('s:tselect_sink', [query]),
+  \ 'options': extend([], ['--ansi', '--no-sort', '--tiebreak=index', '--prompt', 'Tselect> '])}, a:000)
+endfunction
+
 " ------------------------------------------------------------------
 " Snippets (UltiSnips)
 " ------------------------------------------------------------------

doc/fzf-vim.txt

@@ -107,8 +107,8 @@ so you can omit it if you use a plugin manager that doesn't support hooks.
 COMMANDS                                                      *fzf-vim-commands*
 ==============================================================================
 
-    *:Files* *:GFiles* *:Buffers* *:Colors* *:Ag* *:Rg* *:Lines* *:BLines* *:Tags* *:BTags* *:Marks*
-        *:Windows* *:Locate* *:History* *:Snippets* *:Commits* *:BCommits* *:Commands* *:Maps*
+  *:Files* *:GFiles* *:Buffers* *:Colors* *:Ag* *:Rg* *:Lines* *:BLines* *:Tags* *:BTags* *:Tselect*
+ *:Marks* *:Windows* *:Locate* *:History* *:Snippets* *:Commits* *:BCommits* *:Commands* *:Maps*
                                                           *:Helptags* *:Filetypes*
 
  ------------------+-----------------------------------------------------------------------
@@ -125,6 +125,7 @@ COMMANDS                                                      *fzf-vim-commands*
   `:BLines [QUERY]`  | Lines in the current buffer
   `:Tags [QUERY]`    | Tags in the project ( `ctags -R` )
   `:BTags [QUERY]`   | Tags in the current buffer
+  `:Tselect [QUERY]` | Tags matching the query (or top of tagstack if QUERY is unspecified)
   `:Marks`           | Marks
   `:Windows`         | Windows
   `:Locate PATTERN`  |  `locate`  command output

plugin/fzf.vim

@@ -70,6 +70,7 @@ call s:defs([
 \'command!      -bang -nargs=* Rg                        call fzf#vim#grep("rg --column --line-number --no-heading --color=always --smart-case -- ".shellescape(<q-args>), 1, s:p(), <bang>0)',
 \'command!      -bang -nargs=* Tags                      call fzf#vim#tags(<q-args>, <bang>0)',
 \'command!      -bang -nargs=* BTags                     call fzf#vim#buffer_tags(<q-args>, s:p({ "placeholder": "{2}:{3}" }), <bang>0)',
+\'command!      -bang -nargs=* -complete=tag Tselect     call fzf#vim#tselect(<q-args>, <bang>0)',
 \'command! -bar -bang Snippets                           call fzf#vim#snippets(<bang>0)',
 \'command! -bar -bang Commands                           call fzf#vim#commands(<bang>0)',
 \'command! -bar -bang Marks                              call fzf#vim#marks(<bang>0)',