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By the way quartus text editor also has column edit mode (Alt+mouse right click).
Can you explain that? What I do not understand how you locate errors in yor code? So you write your code in notepad++. Compile with modelsim and there is error in your code. How do you locate which line or file causes error?
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Vcom and the quartus compiler tell you the line number of syntax error.
Most of our development time is spent writing the code and in simulation - so there is no need for the quartus gui. Hence the use of notepad++