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Improve clarity of --pdf-renderer=tesseract deprecation warning

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James R. Barlow
2017-09-12 14:34:53 -07:00
parent 1467d118ab
commit 87c2ed8b27
1 changed files with 6 additions and 1 deletions
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7
ocrmypdf/__main__.py
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@@ -343,13 +343,18 @@ def check_options_output(options, log):
options.pdf_renderer = 'sandwich'
if options.pdf_renderer == 'tesseract':
log.warning("The 'tesseract' PDF renderer is deprecated.")
if tesseract.version() < '3.05' and options.output_type == 'pdfa':
log.warning(
"For best results use --pdf-renderer=tesseract "
"--output-type=pdf to disable PDF/A generation via "
"Ghostscript, which is known to corrupt the OCR text of "
"some PDFs produced your version of Tesseract.")
elif tesseract.has_textonly_pdf():
log.warning(
"The argument --pdf-renderer=tesseract provides support for "
"versions of tesseract older than your version. For best "
"results omit this argument and let OCRmyPDF choose the "
"best available renderer.")
if options.debug_rendering and options.pdf_renderer != 'hocr':
log.info(