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I have a long file.f90 with several subroutines. Sometimes I'm editing some subroutine and I forgot where I'm (I mean the name of the subroutine that I'm editing).

I wonder what subroutine I am, I mean, where the cursor is (obviously, without move the cursor until the beginning to the subroutine to see its name). Is it possible?

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    does which-function-mode not work for you? – rekado Sep 28 '15 at 20:50
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    @rekado I assume yemino does not know that mode even exists, otherwise, he probably wouldn't have asked this question. Why don't you post that as an answer? – nanny Sep 28 '15 at 20:52
  • indeed @nanny (thanks for your kindness) , "which-function-mode" is exactly that I want, and I did not know. – yemino Sep 28 '15 at 21:02
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You could enable the global minor mode which-function-mode, which should be supported in f90-mode and fortran-mode.

The documentation says:

Which Function mode is a global minor mode. When enabled, the current function name is continuously displayed in the mode line, in certain major modes.

Enable it by running M-x which-function-mode or by adding (which-function-mode 1) to your ~/.emacs.d/init.el file.

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