![]() ![]() you get »¨a« instead of »ä« when copying from a PDF (and of course cannot search for it either).Īpplications producing PDFs can opt to include the actual text as metadata. Umlauts are also rendered by a diaeresis superimposed on a letter, e.g. make things very difficult, especially as Metafont predates Unicode by almost two decades and thus there never was a Unicode mapping. Different fonts for normal text, math (uses more than one), etc. A common culprit here is LaTeX which utilises an estimated number of 238982375 different fonts (each of which is restricted to 256 glyphs) to achieve its output. The second problem is like the one you face. Especially horrible with complex scripts such as Arabic which contain only ligatures and alternate glyphs after the layout stage which means that Arabic PDFs almost never contain actual text But often even PDFs that allow you to get out ASCII text just fine will mangle everything that is not ASCII. Most of the time the glyph IDs correspond with Unicode code points or at least ASCII codes in the embedded fonts, which means that you often can get ASCII or Latin 1 text back well enough, depending on who created the PDF in the first place (some garble everything in the process). So PDF readers have to carefully piece together the text again, inserting a space whenever they encounter a larger gap between glyphs. Why emit a blank glyph when you could just emit none at all? The result is the same, after all. Sure, if you look at the text there are, but not in the PDF. Another side-effect is that there are no spaces. Since PDF already contains specific information where to place each glyph there is no actual text underlying it as would be normal. ![]() There are two problems extracting meaning from a bunch of glyphs: On that level there is fundamentally no notion of text at all. So you get something like »Place glyph number 72 there, glyph number 101 there, glyph number 108 there. ![]() Text is laid out not as text but as runs of glyphs from a font at certain positions. The fundamental problem is that PDFs are a pre-print format that concerns itself only little with contents and semantics but instead is geared towards faithfully representing a page as it would be printed. However, it has nothing at all to do with OpenType. Press ctrl + v to 'Paste' into a normal GUI application program, for example Firefox or Gedit.The issue here is, as the other answer notes, with ligatures. Press shift + ctrl + v to 'Paste' into another terminal window. Press shift + ctrl + c to 'Copy' (to clipboard). Use a pull-down or right-click menu and select 'Paste' Move the mouse cursor to where you want to copy the text. Use a pull-down or right-click menu and select 'Copy' (to clipboard). Mark the text, that you want to paste by pressing the left mouse button and move the mouse. A method that works in many but not all terminal windows This works in the same terminal window, in another terminal window as well as in other programs, for example Firefox and gedit.Ģ. In a terminal window, the text will be pasted at the cursor position. If no middle button, press the left and right buttons at the same time. Press the middle button or scrolling wheel (like it were a button). Move the mouse cursor to where you want to paste the text. (You can left click twice to mark a word or three times to mark a line.) The linux mark and paste method - 'middle clicking' One of them works in all terminal emulators that I know, including xterm. There are different ways to mark/copy and paste in linux.
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