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Improvement to Customizing Colors section #20240

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Improvement to Customizing Colors section #20240

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20 changes: 17 additions & 3 deletions doc/src/manual/interacting-with-julia.md
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Expand Up @@ -301,8 +301,9 @@ fields if the function is type stable.

## Customizing Colors

The colors used by Julia and the REPL can be customized, as well. To change the color of the Julia
prompt you can add something like the following to your `juliarc.jl` file:
The colors used by Julia and the REPL can be customized, as well. To change the
color of the Julia prompt you can add something like the following to your
`.juliarc.jl` file, which is to be placed inside your home directory:

```julia
function customize_colors(repl)
Expand All @@ -321,9 +322,22 @@ input and answer text by setting the appropriate field of `repl` in the `customi
above (respectively, `help_color`, `shell_color`, `input_color`, and `answer_color`). For the
latter two, be sure that the `envcolors` field is also set to false.

It is also possible to apply boldface formatting by using
`Base.text_colors[:bold]` as a color. For instance, to print answers in
boldface font, one can use the following as a `.juliarc.jl`:

```julia
function customize_colors(repl)
repl.envcolors = false
repl.answer_color = Base.text_colors[:bold]
end

atreplinit(customize_colors)
```

You can also customize the color used to render warning and informational messages by
setting the appropriate environment variables. For instance, to render error, warning, and informational
messages respectively in magenta, yellow, and cyan you can add the following to your `juliarc.jl` file:
messages respectively in magenta, yellow, and cyan you can add the following to your `.juliarc.jl` file:

```julia
ENV["JULIA_ERROR_COLOR"] = :magenta
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