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Richard Smith 90125b12fd Update words.md with keywords from approved proposals and update syntax highlighters (#7861 )

Extend the design's keyword list with the keywords from all the approved
proposals to date. Update our four syntax highlighters to have matching
keyword lists.

There are a few other stale things in some of the syntax highlighters;
those are not fixed here.

Assisted-by: Claude via Antigravity

2026-10-01 01:05:22 +00:00

character_literals.md

Trailing comments (#7441 )

2026-07-04 06:42:02 +00:00

comments.md

Trailing comments (#7441 )

2026-07-04 06:42:02 +00:00

numeric_literals.md

Make proposal filenames use 6 digits and include the title (#7245 )

2026-05-29 00:55:04 +00:00

README.md

Switch from Prettier to Rumdl for Markdown formatting (#7423 )

2026-06-26 21:42:01 +00:00

string_literals.md

Trailing comments (#7441 )

2026-07-04 06:42:02 +00:00

symbolic_tokens.md

Systematically update syntax in the design for #7254 (#7259 )

2026-07-07 00:41:06 +00:00

whitespace.md

Track some needed design doc updates (#7869 )

2026-09-30 19:23:23 +00:00

words.md

Update words.md with keywords from approved proposals and update syntax highlighters (#7861 )

2026-10-01 01:05:22 +00:00

README.md

Lexical conventions

Lexical elements

Lexical elements

The first stage of processing a source file is the division of the source file into lexical elements.

A lexical element is one of the following:

a maximal sequence of whitespace characters
a word
a literal:
- a numeric literal
- a string literal
- a character literal
a comment
a symbolic token

The sequence of lexical elements is formed by repeatedly removing the longest initial sequence of characters that forms a valid lexical element, with the following exception:

When a numeric literal immediately follows a . or -> token, with no intervening whitespace, a real literal is never formed. Instead, the token will end no later than the next . character. For example, tuple.1.2 is five tokens, tuple . 1 . 2, not three tokens, tuple . 1.2. However, tuple . 1.2 is lexed as three tokens.

README.md

Lexical conventions

Table of contents

Lexical elements