chore: add buffer filtering util

README.md

@@ -321,7 +321,17 @@ debugging issues with Neotest.
 
 You can get ahold of the log file's path using
 `require("neotest.logging"):get_filename()`, which usually points to your
-`~/.local/state/nvim/neotest.log`.
+`~/.local/state/nvim/neotest.Log`.
+
+The logfile tends to be ginormous and if you are only looking for neotest-golang
+related entries, you can either search for the `[neotest-golang]` prefix, or
+open the log in a Neovim buffer and then filter out only the adapter-related
+entries:
+
+```lua
+:edit ~/.local/state/nvim/neotest.log
+:lua require("neotest-golang.utils.buffer").filter("[neotest-golang]")
+```
 
 ### Neotest is slowing down Neovim
 

lua/neotest-golang/utils/buffer.lua

@@ -0,0 +1,29 @@
+local lib = require("neotest-golang.lib")
+
+local M = {}
+
+function M.filter(word)
+  -- Get the current buffer
+  local bufnr = vim.api.nvim_get_current_buf()
+
+  -- Get all lines in the buffer
+  local lines = vim.api.nvim_buf_get_lines(bufnr, 0, -1, false)
+
+  -- Create a new table to store lines containing the word
+  local new_lines = {}
+
+  -- Iterate through all lines
+  for _, line in ipairs(lines) do
+    -- If the line contains "neotest-golang", add it to new_lines
+    if line:match(lib.convert.to_lua_pattern(word)) then
+      table.insert(new_lines, line)
+    end
+  end
+
+  -- Replace the buffer contents with the new lines
+  vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, new_lines)
+
+  vim.notify("Removed lines not containing '" .. word .. "'")
+end
+
+return M

lua/neotest-golang/utils/init.lua

@@ -0,0 +1,5 @@
+local M = {}
+
+M.buffer = require("neotest-golang.utils.buffer")
+
+return M