How to make a pretty prompt in Windows Terminal with Powerline, Nerd Fonts, Cascadia Code, WSL, and oh-my-poshĪnatomy of a Prompt (PowerShell) by Brad WilsonĬustomize Your PowerShell Prompt with Nerd Fonts & ANSI Escape Sequences by Trevor Sullivan Sourcesīefore writing this blog post I knew nothing of ANSI escape sequences, let alone the ANSI escape character. Now you are armed with enough knowledge to dive into the world of hardcore prompt customizations! Instead of covering that within the confines of this post, I will instead refer you to several other sources for inspiration.īasic To Boss: Customizing Your PowerShell Prompt by Thomas Rayner The following script block will output all the colors for both the foreground and background colors along with their code. That’s okay, you can output them in the terminal for reference. You probably haven’t memorized the color codes for all the 256 colors that are available.
Test for ansi escape sequences code#
_Read more about ANSI escape code colors._ The 256-color range has different sections 0-7 are standard colors, 8-15 are high intensity colors, 16-231 are a 6圆圆 color cube, and 232-255 are grayscale colors. This sequence changes the foreground color to a dark yellow. An example sequence might look like this, `e[38 5 220m#PSNow. Foreground is indicated by 38 and background is 48. The ANSI sequence for using 8-bit color is `e[ 5 (n) the (n) represent the 8 bit color code. You can also use the 8-bit sequence which provides you with a range of 265 colors. If 8 colors isn’t enough, which it might not be.
Now that you have a good understanding of ANSI escape sequences, let’s take a look at what else can be done with them and have some fun!
Putting the sequence back together again and running it within a terminal will result in the ASCII art #PSNow being displayed with a cyan font and flashing text. At the very end of the sequence `e[0m is calling the SGR function again, but this time it is using the argument 0 to reset and turn off all the attributes defined in the first sequence. In this example that is a here-string stored in the variable $acsiiArt that contains the ASCII art for #PS7Now. What follows after the function is the text that will be displayed. The function is called SGR (“Select Graphics Rendition”) and accepts several arguments which were define earlier in the sequence. Next in the sequence is the letter m which represents a function. In this example 36 represents a foreground color of cyan. Values 30-37 represent different foreground colors. Each argument must be separated by a semi colon, which is why you see a semi colon between 5 and 36. The number 5 represents an argument that makes the text within the sequence blink. Each of the numbers within this sequence represent an argument. The `e is the escape character and [ is the introducer. The sequence starts with the control sequence introducer `e[. Using some ASCII art as an example you can break down the sequence `"`e[5 36m$asciiArt`e[0m" into its different parts. The best way to understand ANSI escape sequences is to break it down into its different parts. That escape sequence will determine how the terminal interpret the characters and acts accordingly. Inside the square bracket is where you place the escape sequence.
To use the escape character, you start a string with the escape character `e followed by an opening square bracket `e[. However, PowerShell now includes a special character for escape `e. Because of that you’d have to use "$(27)" to output an ASCII character representing an escape character. Windows PowerShell doesn’t have a built-in escape special character. ANSI escape sequences are often used with modifying command line prompt displays! Escape characters are a standard of in-band signaling that control the cursor location, color, font styling, and other options within terminals and terminal emulators. Most commonly escape characters are used to specify a virtual terminal sequence (ANSI escape sequence) that modifies the terminal. The escape character is used to indicate the beginning of a sequence and changes the meaning of the characters that follow the escape character. When using ANSI within PowerShell there are two main parts the escape character and the escape sequence.
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