get rid of dubious heuristic helper

Dependencies

• [2] FHRFVEJV tweak format again
• [3] 2NTKHMLG configurable error handler when running tests
• [4] 5ZCQGZP5 save 2 more alternate formats for test failures
• [5] CZQ3NJ4N Merge text0
• [6] ARYMNK52 merge bugfix: show test failures
• [7] AVTNUQYR basic test-enabled framework
• [8] 3QMTXKWN rename
• [9] 36Z442IV back to commit 8123959e52f without code editing
• [10] JNJ4R56X support running tests multiple times
• [11] ORRSP7FV deduce test names on failures
• [12] TSV3KPBR tweak format of test failures
• [*] 3QNOKBFM beginnings of a test harness

Change contents

• replacement in app.lua at line 72
  [4.33]→[3.18:72](∅→∅)
  − App.run_tests(record_error_with_heuristic_location)
  [4.33]

  [4.1829]
  + App.run_tests(record_error)
• edit in app.lua at line 453
  [4.395]→[4.395:534](∅→∅),[4.268]→[4.60839:60966](∅→∅),[4.534]→[4.60839:60966](∅→∅),[4.60839]→[4.60839:60966](∅→∅),[4.60966]→[4.95:222](∅→∅),[4.222]→[2.18:115](∅→∅),[2.115]→[4.61148:61188](∅→∅),[4.313]→[4.61148:61188](∅→∅),[4.61148]→[4.61148:61188](∅→∅)
  − end

  −

  − -- Test_errors will be an array

  − -- add test_name and guess at file/line

  − function record_error_with_heuristic_location(test_name, err)

  − local err_without_line_number = err:gsub('^[^:]*:[^:]*: ', '')

  − local stack_trace = debug.traceback('', --[[stack frame]]5)

  − local file_and_line_number = stack_trace:gsub('stack traceback:\n', ''):gsub(': .*', '') --[[strip newline and tab]] :sub(3)

  − local full_error = test_name..' -- '..err_without_line_number..' ('..file_and_line_number..')'

  − table.insert(Test_errors, full_error)