On Sun, Sep 13, 2020 at 11:59:45AM +0200, A M wrote: > Feature request: Enable possibility of colored stderr output.
Not possible. Output does not "pass through" bash on the way to the terminal. Bash is like a plumber or a switchboard operator. Bash just screws all the pipes together, or plugs the wires into the holes, and then stands back and lets the water flow, or the people talk to each other. When you run a command like foo 2>&1 | bar bash sets up a pipe, and then forks two subshells, and connects the stdout of the "left" side to the pipe's input hole, and connects the stdin of the "right" side to the pipe's output hole. Then, on the "left" side, bash closes stderr and then reopens it as a duplicate of stdout. Finally, each child bash executes its command, while the parent waits for them to be finished. The handling of stdout or stderr is done by foo and by bar. It's outside of bash's control. > Below are links to some discussions/articles on stderr colorization, I > include them as examples of the interest/demand for this functionality: > > https://stackoverflow.com/questions/6841143/how-to-set-font-color-for-stdout-and-stderr If you like any of the hacks presented in this discussion, go ahead and use them. Note that they *are* hacks, truly, and they only give you something that could be called "close enough" in certain cases. I did not open your other links. I'm guessing they're more of the same.
