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OK, there is a language indicator/selector at top of Unity (I am on Ubuntu 12.04).

And I was thinking that text cursor color could be a nice way of current language indication. I'm using three languages, and while typing in Gmail or somewhere, we look at the text cursor. So for convenience reasons it would be a nice way to adapt separate color (or text cursor form) for each language.

I don't know if this is already implemented. Would be nice to use this feature. Would appreciate if you can point me in right direction.

As I said, this is not about mouse cursor/pointer, this is about the cursor in text fields.

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    (Commenting until I get more info). This might have an option for editing the text cursor colour. Then it would be a matter of connecting this to a dectection in the currently selected IME language. – crimsonspectre Oct 5 '15 at 23:42
  • Text bar/cursor itself cannot change because it's bound to the color of whatever text box it is part of. Would it be a satisfactory solution if Unity launcher changed according to language ? – Sergiy Kolodyazhnyy Mar 20 '16 at 2:51
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Make a shell script that tests weather how your language ($LANG) is set. Then, it output a value of a colored prompt accordingly.

In .bashrc, you would then set the promptvars shell option, and then set the bash prompt to the output of that shell script, like this:

PS1="`/full/path/your-script.sh`\$ "

That way, your script will be invoked each and every time you get a command prompt and it will generate the corresponding prompt string according to how LANG is set.

How do you generate a colored prompt? It will imposible for me to describe it without transcribing a color table... However, the easy way is to go to http://ezprompt.net/ and have it generate it for you on either case, and then just copy the generated colorized prompts on each particular case.

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    That's a good idea, but it will be limited to bash only, and only terminal window. OP wanted cursor set per GUI window, e.g. firefox + english -> cursor red, Libreoffice + german -> green. – Sergiy Kolodyazhnyy Nov 30 '15 at 18:54

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