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cli: improve invalid UTF-8 pattern error message

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When a pattern with invalid UTF-8 is given, the error message suggests
unqualified use of hex escape sequences to match arbitrary bytes. But
you *also* need to disable Unicode mode. So include that in the error
message.

Fixes #1339
This commit is contained in:
Andrew Gallant
2020-05-08 08:53:41 -04:00
parent 50840ea43b
commit 64a4dee495
2 changed files with 6 additions and 7 deletions
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11
crates/cli/src/pattern.rs
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@ -38,9 +38,9 @@ impl fmt::Display for InvalidPatternError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"found invalid UTF-8 in pattern at byte offset {} \
(use hex escape sequences to match arbitrary bytes \
in a pattern, e.g., \\xFF): '{}'",
"found invalid UTF-8 in pattern at byte offset {}: {} \
(disable Unicode mode and use hex escape sequences to match \
arbitrary bytes in a pattern, e.g., '(?-u)\\xFF')",
self.valid_up_to, self.original,
)
}
@ -64,10 +64,7 @@ pub fn pattern_from_os(pattern: &OsStr) -> Result<&str, InvalidPatternError> {
.to_string_lossy()
.find('\u{FFFD}')
.expect("a Unicode replacement codepoint for invalid UTF-8");
InvalidPatternError {
original: escape_os(pattern),
valid_up_to: valid_up_to,
}
InvalidPatternError { original: escape_os(pattern), valid_up_to }
})
}