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printer: add --passthru flag

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The --passthru flag causes ripgrep to print every line,
even if the line does not contain a match. This is a
response to the common pattern of `^|foo` to match every
line, while still highlighting things like `foo`.

Fixes #740
This commit is contained in:
dana
2018-01-11 17:45:51 -06:00
committed by Andrew Gallant
parent 34c0b1bc70
commit 58bdc366ec
6 changed files with 84 additions and 5 deletions
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10
src/args.rs
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@@ -433,7 +433,9 @@ impl<'a> ArgMatches<'a> {
/// Note that if -F/--fixed-strings is set, then all patterns will be
/// escaped. Similarly, if -w/--word-regexp is set, then all patterns
/// are surrounded by `\b`, and if -x/--line-regexp is set, then all
/// patterns are surrounded by `^...$`.
/// patterns are surrounded by `^...$`. Finally, if --passthru is set,
/// the pattern `^` is added to the end (to ensure that it works as
/// expected with multiple -e/-f patterns).
///
/// If any pattern is invalid UTF-8, then an error is returned.
fn patterns(&self) -> Result<Vec<String>> {
@@ -470,7 +472,11 @@ impl<'a> ArgMatches<'a> {
}
}
}
if pats.is_empty() {
// It's important that this be at the end; otherwise it would always
// match first, and we wouldn't get colours in the output
if self.is_present("passthru") && !self.is_present("count") {
pats.push("^".to_string())
} else if pats.is_empty() {
pats.push(self.empty_pattern())
}
Ok(pats)