Pretty-printing

Pretty-printing is a way to make text easier to read and understand. It uses special formatting rules to organize things like source code, markup, and other text files. This can include making sure lines are indented correctly and using colors or different fonts to highlight syntactic elements.

When people work with computer code, pretty-printing helps them see patterns and understand what the code does. Tools that do this are sometimes called code formatters or beautifiers. They take messy or hard-to-read code and turn it into something that looks clean and tidy.

Using pretty-printing is important because it makes it easier for anyone reading the code to follow along. Whether you are learning to code or working with others, having well-formatted code can save time and reduce mistakes.

Pretty-printing mathematics

Pretty-printing makes math problems look neat and clear, just like in a math book. Computers and calculators can change math symbols to look better on the screen. For example, instead of showing "x ^ 2 + 3 * x", they might show it as a tidy "x² + 3x".

Some special calculators, like the Casio 9860 series, HP-49/50 series, HP Prime, TI-84 Plus, TI-89, TI-Nspire, and TI-83 Plus with extra tools, can also make math look nicer. Even newer scientific calculators with color screens can do this well. Programs like TeX are made just to make math look beautiful in printed work.

Pretty-printing markup and tag-based code

Pretty-printing makes markup languages easier to read by adding spaces and line breaks. This helps show how tags are nested inside each other.

Different markup languages handle spaces in different ways. For example, in MathML, extra spaces don’t change the meaning of the content. But in HTML, spaces between tags are part of the content. This means when we make HTML look nicer, we need to be careful not to add or remove parts of the content by mistake. It’s simpler with MathML, but HTML needs more complex methods to keep the formatting correct. Tools like Pretty Diff use special steps to beautify HTML and similar languages.

Formatting of program source code

Programmers use special styles when writing code to make it easier to read. These styles include how they indent lines, add spaces, and place special characters.

There are tools called beautifiers or code formatters that can change the look of code to follow a style. These tools read the code, understand its parts, and then display it in a neat way. Some of these tools work alone, while others are built into programs that help write code, like text editors and special coding environments. For example, the Emacs editor can be set to format code in specific ways depending on the programming language being used.