fix: don't use error(...)

doc/guard.nvim.txt

@@ -1,4 +1,4 @@
-*guard.nvim.txt*          For NVIM v0.8.0         Last change: 2024 October 06
+*guard.nvim.txt*          For NVIM v0.8.0         Last change: 2024 October 10
 
 ==============================================================================
 Table of Contents                               *guard.nvim-table-of-contents*

lua/guard/events.lua

@@ -1,5 +1,7 @@
 local api, uv = vim.api, vim.uv
-local getopt = require('guard.util').getopt
+local util = require('guard.util')
+local getopt = util.getopt
+local report_error = util.report_error
 local au = api.nvim_create_autocmd
 local iter = vim.iter
 local M = {}
@@ -42,7 +44,8 @@ function M.watch_ft(ft)
   -- check if all cmds executable before registering formatter
   iter(require('guard.filetype')[ft].formatter):any(function(config)
     if type(config) == 'table' and config.cmd and vim.fn.executable(config.cmd) ~= 1 then
-      error(config.cmd .. ' not executable', 1)
+      report_error(config.cmd .. ' not executable')
+      return false
     end
     return true
   end)
@@ -94,7 +97,7 @@ local debounce_timer = nil
 function M.register_lint(ft, events)
   iter(require('guard.filetype')[ft].linter):any(function(config)
     if config.cmd and vim.fn.executable(config.cmd) ~= 1 then
-      error(config.cmd .. ' not executable', 1)
+      report_error(config.cmd .. ' not executable')
     end
     return true
   end)

lua/guard/format.lua

@@ -79,13 +79,18 @@ local function do_fmt(buf)
   end, fmt_configs)
 
   -- check if all cmds executable again, since user can call format manually
-  iter(fmt_configs):any(function(config)
+  local all_executable = not iter(fmt_configs):any(function(config)
     if config.cmd and vim.fn.executable(config.cmd) ~= 1 then
-      error(config.cmd .. ' not executable', 1)
+      report_error(config.cmd .. ' not executable')
+      return true
     end
-    return true
+    return false
   end)
 
+  if not all_executable then
+    return
+  end
+
   -- filter out "pure" and "impure" formatters
   local pure = iter(filter(function(config)
     return config.fn or (config.cmd and config.stdin)

spec/filetype_spec.lua

@@ -123,16 +123,4 @@ describe('filetype module', function()
 
     same({ '-l', '-L', '1' }, ft.c.linter[1].args)
   end)
-
-  it('can detect non executable formatters', function()
-    assert(not pcall(function()
-      ft('c'):fmt({ cmd = 'hjkl' })
-    end))
-  end)
-
-  it('can detect non executable linters', function()
-    assert(not pcall(function()
-      ft('c'):lint({ cmd = 'hjkl' })
-    end))
-  end)
 end)