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Require four hex digits in DXF text \U+XXXX escape

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Found while testing crates/cad/src/import/text.rs:73-74 (escapes)

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
This commit is contained in:
NetterSilver
2026-10-24 19:02:09 +07:00
committed by bflatastic
co-authored by Claude Haiku 5.5
parent bc041e15ef
commit 2a4aafe346
1 changed files with 9 additions and 0 deletions
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crates/cad/src/import/text.rs
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@@ -71,6 +71,7 @@ fn escapes(s: &str) -> String {
let after = rest.get(c.len_utf8()..).unwrap_or("");
if c == '\\'
&& let Some(hex) = after.strip_prefix("U+").or_else(|| after.strip_prefix("u+")).and_then(|h| h.get(..4))
&& hex.bytes().all(|b| b.is_ascii_hexdigit())
&& let Some(ch) = u32::from_str_radix(hex, 16).ok().and_then(char::from_u32)
{
out.push(ch);
@@ -135,6 +136,14 @@ fn percent_codes(s: &str) -> String {
mod tests {
use super::*;
#[test]
fn unicode_escape_requires_four_hex_digits() {
assert_eq!(plain("\\U++041"), "\\U++041");
assert_eq!(plain("\\U+00G1"), "\\U+00G1");
assert_eq!(plain("\\U+ 041"), "\\U+ 041");
assert_eq!(plain("\\U+00C9"), "É");
}
#[test]
fn control_codes_and_escapes() {
assert_eq!(plain("45%%d %%p0.1 %%c20 100%%% %%uunder%%u"), "45° ±0.1 ⌀20 100% under");