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docs: clarify default character table uses 7-bit ASCII #285

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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -5,7 +5,7 @@
![](https://img.shields.io/crates/v/hexyl.svg?colorB=00aa88)

`hexyl` is a hex viewer for the terminal. It uses a colored output to distinguish different categories
of bytes (NULL bytes, printable ASCII characters, ASCII whitespace characters, other ASCII characters and non-ASCII).
of bytes (NULL bytes, 7-bit printable ASCII, ASCII whitespace, other 7-bit ASCII, and non-ASCII bytes 0x80–0xFF).

## Preview

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4 changes: 2 additions & 2 deletions doc/hexyl.1.md
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Expand Up @@ -14,8 +14,8 @@ hexyl - a command-line hex viewer

**hexyl** is a simple hex viewer for the terminal.
It uses a colored output to distinguish different categories of bytes (NULL
bytes, printable ASCII characters, ASCII whitespace characters, other ASCII
characters and non-ASCII).
bytes, 7-bit printable ASCII characters, ASCII whitespace characters, other
7-bit ASCII characters and non-ASCII bytes (0x80–0xFF).

# POSITIONAL ARGUMENTS

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8 changes: 5 additions & 3 deletions src/lib.rs
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Expand Up @@ -34,9 +34,11 @@ pub enum IncludeMode {
#[derive(Copy, Clone, Debug, Default, ValueEnum)]
#[non_exhaustive]
pub enum CharacterTable {
/// Show printable ASCII characters as-is, '⋄' for NULL bytes, ' ' for
/// space, '_' for other ASCII whitespace, '•' for other ASCII characters,
/// and '×' for non-ASCII bytes.
/// Show 7-bit printable ASCII (0x20–0x7E) as-is, '⋄' for NULL bytes, ' '
/// for space, '_' for other ASCII whitespace, '•' for other 7-bit control
/// characters, and '×' for non-ASCII bytes (0x80–0xFF). Extended/8-bit
/// "ASCII" code pages are not shown as glyphs here; use `codepage-437`
/// (or another table) if you need that.
#[default]
Default,

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