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Build Identifier: 3.6.0 M6 I tried from a C++ editor to add a missing word in my (not yet existing) dictionary and Eclipse asks: "Missing User Dictionary A user dictionary is needed to add words. Do you want to configure it now?" I replied with yes and chose /home/jens/.eclipse/dictionary.en_GB where /home/jens/.eclipse is my workspace. I selected OK in the dialog, tried adding the word again and got the same "Missing User Dictionary" dialog. Mhm, what now? I created an empty file but it still does not work. Even after a restart of Eclipse it doesn not work. I also added the missing word ("Destructor"), still no success ... Reproducible: Always
*** This bug has been marked as a duplicate of bug 306929 ***
This is not bug #306929 as it is about a missing spell engine. I have a working spell engine. Now I found a solution: In the preferences I switch the spelling engine from "default spelling engine" to "C/C++ spelling engine" and the user defined dictionary was not set after this. So it seems that my input in the dialog was not properly propagated ... Neverthless you're right that I have no JDK plugins installed.
I suffered from this too - and so do others on the web, where I searched to find out what was wrong and how to fix it. The problem is that answering "Yes" to "Do you want to configure a user dictionary?" leads to the user-dictionary config page, but the page opens to the settings for the "default" engine, not the C++ engine. There is no way to discover that you need to change the selection to the C++ engine FIRST, and THEN fill out the form. If there is no way to force the Preferences window's Spelling dialog to open with the C++ engine pre-selected, then the dialog that leads you there should tell you to "Select the C++ engine on the Preferences page" or something. That is not a preferred UI but it's better than what is there now.
This is platform independent issue. I had troubles on Windows too. I have spent 20 minutes until found this kind of solution.
The solution explained by Allan Pratt works. The bug is that when the Preferences dialog opens, the selection for "Spelling Engine to use" isn't automatically set to "C/C++ spelling engine". The solution was also noted here: http://syncor.blogspot.com/2011/03/eclipse-adding-user-dictionary-for-cdtc.html
Problem still exists in 4.2.1. Allen Pratt's solution worked, but it's not very user friendly. The idea to bring up the dialog when a user dictionary needs to be created is good, but it is non-obvious that you need to select the C++ spelling engine.
Still a problem in 4.4.0 in 2015.
If anyone cares, it's still an issue in 4.6.1 in Nov 2016. Allan Pratt's solution still works, but it's not easy to find.
Also still a problem in 4.7.1.
Thanks to Allan Pratt. This bug is very annoying even for experienced users, please fix it.
This exact bug still exists as of 4 Feb. 2021 in Eclipse Version 2020-09 (4.17.0) on Ubuntu 20.04. I've created the dictionary a dozen times, restarting Eclipse each time, trying shorter dictionary names, etc, still with no success.
As others have pointed out, the answer is I must select the "C/C++ spelling engine" for the spellcheck dictionary to work! See here: 1. https://syncor.blogspot.com/2011/03/eclipse-adding-user-dictionary-for-cdtc.html 2. https://stackoverflow.com/questions/23237111/how-to-create-a-user-dictionary-in-eclipse/28207075#28207075
