debug: make local variables load config configurable

Author: gremat

autoload/go/config.vim

@@ -217,6 +217,10 @@ function! go#config#LspLog() abort
   return g:go_lsp_log
 endfunction
 
+function! go#config#DebugLocalVariablesLoadConfig() abort
+  return get(g:, 'go_debug_local_variables_load_config', {'MaxStringLen': 20, 'MaxArrayValues': 20, 'MaxVariableRecurse': 10})
+endfunction
+
 function! go#config#SetDebugDiag(value) abort
   let g:go_debug_diag = a:value
 endfunction

autoload/go/debug.vim

@@ -1242,7 +1242,7 @@ function! s:update_variables() abort
   " MaxStructFields is the maximum number of fields read from a struct, -1 will read all fields.
   let l:cfg = {
         \ 'scope': {'GoroutineID': s:goroutineID()},
-        \ 'cfg':   {'MaxStringLen': 20, 'MaxArrayValues': 20, 'MaxVariableRecurse': 10}
+        \ 'cfg':   go#config#DebugLocalVariablesLoadConfig()
         \ }
 
   try

doc/vim-go.txt

@@ -2481,22 +2481,36 @@ will suppress logging entirely.  Default: `'debugger,rpc'`:
   let g:go_debug_log_output = 'debugger,rpc'
 <
 
-                                                     *'g:go_highlight_debug'*
+                                                      *'g:go_highlight_debug'*
 
 Highlight the current line and breakpoints in the debugger.
 
 >
   let g:go_highlight_debug = 1
 <
 
-                                         *'go:go_debug_breakpoint_sign_text'*
+                                           *'g:go_debug_breakpoint_sign_text'*
 
 Set the sign text used for breakpoints in the debugger. By default it's '>'.
 
 >
   let g:go_debug_breakpoint_sign_text = '>'
 <
 
+                                    *'g:go_debug_local_variables_load_config'*
+
+Set load configuration that is used to retrieve and display local variables in
+the variable window. For details about the values, refer to
+https://pkg.go.dev/github.com/go-delve/delve/service/api#LoadConfig .
+
+>
+  let g:go_debug_local_variables_load_config = {
+    \ 'MaxStringLen':       20,
+    \ 'MaxArrayValues':     20,
+    \ 'MaxVariableRecurse': 10,
+  \ }
+<
+
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