Text selection is not transparent in PDFs OCRed with Tesseract
In such PDFs the selected text becomes hidden behind the selection; see this issue, which also describes the workaround in detail. The following function, which depends on the qpdf.el package, can be used to convert such a PDF file into one where text selection is transparent:
(defun my-fix-pdf-selection () "Replace pdf with one where selection shows transparently." (interactive) (unless (equal (file-name-extension (buffer-file-name)) "pdf") (error "Buffer should visit a pdf file.")) (unless (equal major-mode 'pdf-view-mode) (pdf-view-mode)) ;; save file in QDF-mode (qpdf-run (list (concat "--infile=" (buffer-file-name)) "--qdf --object-streams=disable" "--replace-input")) ;; do replacements (text-mode) (read-only-mode -1) (while (re-search-forward "3 Tr" nil t) (replace-match "7 Tr" nil nil)) (save-buffer) (pdf-view-mode))
Note that this overwrites the PDF file visited in the buffer from which it is run! To avoid this replace the
(concat "--outfile=" (file-truename (read-file-name "Outfile: "))).