Skip to content

[Version 13.0] Feature support for ESC escape sequence #1769

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Draft
RexJaeschke wants to merge 3 commits into
base: draft-v13
Choose a base branch
from
Draft

[Version 13.0] Feature support for ESC escape sequence #1769

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
9c14a43
add support for ESC escape sequence
RexJaeschke Aug 11, 2026
35227f1
fix md
RexJaeschke Aug 11, 2026
df8431f
Propagate corrected aggregate numbering baseline
BillWagner Sep 22, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 3 additions & 2 deletions standard/lexical-structure.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@
Conceptually speaking, a program is compiled using three steps:

1. Transformation, which converts a file from a particular character repertoire and encoding scheme into a sequence of Unicode characters.
1. Lexical analysis, which translates a stream of Unicode input characters into a stream of tokens.

Check warning on line 10 in standard/lexical-structure.md

View workflow job for this annotation

GitHub Actions / Markdown to Word Converter

standard/lexical-structure.md#L10 

MDC032::Line length 85 > maximum 81
1. Syntactic analysis, which translates the stream of tokens into executable code.

Apart from accepting UTF-8 encoded input (as required by [§5](conformance.md#5-conformance), a conforming implementation may choose to accept and transform additional character encoding schemes (such as UTF-16, UTF-32, or non-Unicode character mappings).
Expand Down Expand Up @@ -846,15 +846,15 @@

fragment Simple_Escape_Sequence
: '\\\'' | '\\"' | '\\\\' | '\\0' | '\\a' | '\\b' |
'\\f' | '\\n' | '\\r' | '\\t' | '\\v'
'\\e' | '\\f' | '\\n' | '\\r' | '\\t' | '\\v'
;

fragment Hexadecimal_Escape_Sequence
: '\\x' Hex_Digit Hex_Digit? Hex_Digit? Hex_Digit?
;
```

> *Note*: A character that follows a backslash character (`\`) in a *Character* must be one of the following characters: `'`, `"`, `\`, `0`, `a`, `b`, `f`, `n`, `r`, `t`, `u`, `U`, `x`, `v`. Otherwise, a compile-time error occurs. *end note*
> *Note*: A character that follows a backslash character (`\`) in a *Character* must be one of the following characters: `'`, `"`, `\`, `0`, `a`, `b`, `e`, `f`, `n`, `r`, `t`, `u`, `U`, `x`, `v`. Otherwise, a compile-time error occurs. *end note*
<!-- markdownlint-disable MD028 -->

<!-- markdownlint-enable MD028 -->
Expand Down Expand Up @@ -886,6 +886,7 @@
| `\0` | Null | U+0000 |
| `\a` | Alert | U+0007 |
| `\b` | Backspace | U+0008 |
| `\e` | ESC | U+001B |
| `\f` | Form feed | U+000C |
| `\n` | New line | U+000A |
| `\r` | Carriage return | U+000D |
Expand Down
Loading