In tex file:


It produces

enter image description here

  • 2
    Welcome to TeX.SX! Please help us to help you and add a minimal working example (MWE) that illustrates your problem. It will be much easier for us to reproduce your situation and find out what the issue is when we see compilable code, starting with \documentclass{...} and ending with \end{document}. In this case, I can't reproduce the problem with the code you've provided; it works as expected and produces a proper ö. Commented Jul 2, 2014 at 23:49
  • Make sure you are using " but not strange unicode madness in case you have copied it from a website etc. such as ''
    – percusse
    Commented Jul 2, 2014 at 23:52
  • It is very obvious I am using " not ' '. At least in my tex file it looks like " to me. I have used "shift" key to input ".
    – yanfyon
    Commented Jul 3, 2014 at 2:37

3 Answers 3


It is difficult to see in some editors, but in the first case you have \" acting on o, in the second: \' acting on ', hence the strange result.






enter image description here

BTW: your question gives an interesting example, why " and '' should never be mixed. Improper usage of " as a quote does not give so visible result.

  • I use TeXworks as editor. I agree that two separate ' without space between them looks same as ". But I use "shift" key to input ". The result is still same to me.
    – yanfyon
    Commented Jul 3, 2014 at 3:27
  • 8
    @yanfyon TeXworks, by default, auto-converts " to '' (Format -> Smart Quotes). I always turn this off from the Preferences, but some people clearly find it useful. (This happens even if you type in " using the standard input method, so you may not be aware of it.)
    – Joseph Wright
    Commented Jul 3, 2014 at 5:54

Maybe that's very naive, but why not simply input direcly ö in the editor?







enter image description here


I just found out why this happened. In the TeXworks editor I use, the original setup is: "Format"--> "Smart Quotes"-->"Tex ligatures", after I changed the setup to: "Format"--> "Smart Quotes"-->"None", then it works as expected !!!!

  • I am really confused. When I changed the setup of "Smart Quotes" from "None" back to "Tex ligatures" again, it still works normal. But I still believe the abnormal behavior has something to do with the "Smart Quotes" setup.
    – yanfyon
    Commented Jul 3, 2014 at 3:55
  • I make one more test. If I set the "Smart Quotes" as "Tex ligatures" and re-input Toks\"{o}z, it still comes out as abnormal. So now I am sure the abnormal out is indeed related to the "Smart Quotes" setup.
    – yanfyon
    Commented Jul 3, 2014 at 4:16
  • 2
    The Smart Quotes setting has an effect only at the time you press the " key. Changing Smart Quotes on or off doesn't go through your document and replace existing " characters.
    – cjm
    Commented Jul 3, 2014 at 7:38
  • 3
    I petition to have this "feature" renamed "dumb quotes". (Especially since all the editor has to do is to check if the previous character is \ and, if so, leave the " alone.) Commented Jul 3, 2014 at 10:47

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