add options to configure gopls

autoload/go/config.vim

@@ -489,6 +489,22 @@ function! go#config#ReferrersMode() abort
   return get(g:, 'go_referrers_mode', 'gopls')
 endfunction
 
+function! go#config#GoplsCompleteUnimported() abort
+  return get(g:, 'go_gopls_complete_unimported', 0)
+endfunction
+
+function! go#config#GoplsDeepCompletion() abort
+  return get(g:, 'go_gopls_deep_completion', 1)
+endfunction
+
+function! go#config#GoplsFuzzyMatching() abort
+  return get(g:, 'go_gopls_fuzzy_matching', 1)
+endfunction
+
+function! go#config#GoplsUsePlaceholders() abort
+  return get(g:, 'go_gopls_use_placeholders', 0)
+endfunction
+
 " Set the default value. A value of "1" is a shortcut for this, for
 " compatibility reasons.
 if exists("g:go_gorename_prefill") && g:go_gorename_prefill == 1

autoload/go/lsp/message.vim

@@ -190,6 +190,10 @@ function! go#lsp#message#ConfigurationResult(items) abort
     let l:config = {
           \ 'buildFlags': [],
           \ 'hoverKind': 'NoDocumentation',
+          \ 'deepCompletion': go#config#GoplsDeepCompletion(),
+          \ 'fuzzyMatching': go#config#GoplsFuzzyMatching(),
+          \ 'completeUnimported': go#config#GoplsCompleteUnimported(),
+          \ 'usePlaceholders': go#config#GoplsUsePlaceholders(),
           \ }
     let l:buildtags = go#config#BuildTags()
     if buildtags isnot ''

doc/vim-go.txt

@@ -1712,6 +1712,39 @@ Specifies whether `gocode` should use a different socket type. By default
 >
   let g:go_gocode_socket_type = 'unix'
 <
+
+                                            *'g:go_gopls_complete_unimported'*
+
+Specifies whether `gopls` should include suggestions from unimported packages.
+By default it is disabled.
+>
+  let g:go_gopls_complete_unimported = 0
+<
+
+                                                *'g:go_gopls_deep_completion'*
+
+Specifies whether `gopls` should use deep completion. By default it is
+enabled.
+>
+  let g:go_gopls_deep_completion = 1
+<
+
+                                                 *'g:go_gopls_fuzzy_matching'*
+
+Specifies whether `gopls` should use fuzzy matching for completions.
+By default it is enabled.
+>
+  let g:go_gopls_fuzzy_matching = 1
+<
+
+                                               *'g:go_gopls_use_placeholders'*
+
+Specifies whether `gopls` can provide placeholders for function parameters and
+struct fields. By default it is disabled.
+>
+  let g:go_gopls_use_placeholders = 0
+<
+
                                                   *'g:go_template_autocreate'*
 
 When a new Go file is created, vim-go automatically fills the buffer content