This is some information about the possible configuration of pretty printing in release 0.7.

Pretty printing existing JavaScript class files (no migration to 0.7). In the following example, my/cool/Class.js is replaced by the pretty-printed version:

$ cd framework
$ tool/generator.py --pretty-print --include-without-dependencies my.cool.Class \
  --class-path source/class --cache-directory .cache/

If you use the –pretty-print switch to enable code beautification in general, there are a couple of additional options available that help you to tailor the resulting code style to your needs. These additional options only work if –pretty-print is enabled. You can get a complete list of these options if you invoke the generator with generator.py –help and scan for "pretty". Currently, the following options are available:

String used for indenting. Popular choices would be " " (2 spaces), or " " (4 spaces). Within the indentation string the escaped character "\t" (backslash-t) is available to indicate the TAB character. Combinations are possible (even if the resulting code looks weird ;), the default is " " (2 spaces).

Defines whether "{" will always [aA] or never [nN] be on a new line. This covers all occurences of "{", be it functions, loop bodies or maps. The default is mixed behaviour [mM], which leaves opening curly braces on the same or puts them on a new line, depending on the complexity of the contained code block.

This flag causes the indent string to always be inserted before an opening curly brace, "{" (default: False).

Align a block of code with its surrounding curlies (obviously not with the opening curly when it is not on a new line); use in combination with –pretty-print-indent-before-open-curly, otherwise the result might look weird (default: False)

Keep column for trailing comments instead of just putting it after text (via pretty-print-inline-comment-padding). If code is too long, either the padding specified in –pretty-print-inline-comment-padding is inserted or the comment is moved to the next column given by –pretty-print-comments-trailing-commentCols (default: False)

Columns for trailing comments as a comma separated list e.g. "50,70,90". In this case if code length is less than 49, column 50 will be used; if between 50 and 69, column 70 will be used and so on. These apply if –pretty-print-comments-trailing-keepColumn isn't specified, or if it is specified but the code exceeds the original column (default: "")

Allows you to specify a string used between the end of a statement and a trailing inline comment (default: " " (2 spaces)).