Can't pass citation mark character into tessedit_char_whitelist

[natsukashiixo]

I'm running into issues trying to use " in the tessedit_char_whitelist config flag. This is most likely because " is also used by pytesseract to know when the config ends.
I have no idea if this should be considered a bug.
I'm mostly looking for alternative solutions, found no info in the documentation on whether you can just pass a config file instead.

charwhitelist = r'ABCDEFGHIJKLMNOPQRSTUVWZYXÅÄÖabcdefghijklmnopqrstuvwxyzåäö0123456789-()/=&%!?:;.,é ' + '\"'

  #Import path to tesseract executable
  with open('tesseract_install.txt', 'r') as file:
      install_path = file.read()

  pytesseract.pytesseract.tesseract_cmd = install_path

  files = list(filter(IsImage, input_dir))

  with about_time() as t1:
      total_iterations = len(files)
      remaining_iterations = len(files)
      completed_iterations = 0 
      print(f'Starting Tesseract using PSM {psm_nr}, there are {total_iterations} pages to read.')
      for file in files:
          print(f'Starting work on {file}')
          try: 
              img_cv = cv2.imread(str(file)) 
              img_rgb = cv2.cvtColor(img_cv, cv2.COLOR_BGR2RGB)
              hocr = pytesseract.image_to_pdf_or_hocr(img_rgb, extension='hocr', lang='swe+script/Latin', config=f"--oem 3 --psm {psm_nr} -c tessedit_char_whitelist='{charwhitelist}'")`

Example output while trying to use this whitelist:
Smhllshjlp1922
ArfreningenSmhllshjlpklsskmpsorgnistion?

Example output without whitelist (and also expected result):
Samhällshjälp 1922
Är föreningen Samhällshjälp klasskampsorganisation?

python version: 3.10.6 run via bundled interpreter in an executable
pytesseract version: 0.3.10
tesseract version: UB Mannheim windows binary, v5.3.0.20221214

[stefan6419846]

This seems to be related to

pytesseract/pytesseract/pytesseract.py

Line 252 in 672ac6d

cmd_args += shlex.split(config)

and roughly the same base issue as in #356

[natsukashiixo]

Thanks for looking into it. In case someone else finds this issue my current workaround is:
cfg_filename = 'letters' hocr = pytesseract.image_to_pdf_or_hocr(img_rgb, extension='hocr', lang='swe+script/Latin', config=f"--oem 3 --psm {psm_nr} {cfg_filename}", )
where 'letters' points to a file located in tessdata/configs that's named letters with no file extension. in the file is the string tessedit_char_whitelist ABCDEFGHIJKLMNOPQRSTUVWZYXÅÄÖabcdefghijklmnopqrstuvwxyzåäö0123456789-()/=&%!?:;.,é "
This lets me load the whitelist from a file without impacting my ability to set the PSM number using a function, and so far while testing it behaves as expected