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pgrep: The pattern is too long (more than 15 characters) and should be able to match pid correctly. #617

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pgrep: The pattern is too long (more than 15 characters) and should be able to match pid correctly. #617

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pgrep: The pattern is too long (more than 15 characters) and should b…
Franklin-Qi Feb 4, 2026
872c3cc
Placing length error messages in subsequent could avoid performance …
Franklin-Qi Feb 5, 2026
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13 changes: 7 additions & 6 deletions src/uu/pgrep/src/process_matcher.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -161,18 +161,19 @@ pub fn get_match_settings(matches: &ArgMatches) -> UResult<Settings> {
));
}

if !settings.full && pattern.len() > 15 {
let msg = format!("pattern that searches for process name longer than 15 characters will result in zero matches\n\
Try `{} -f' option to match against the complete command line.", uucore::util_name());
return Err(USimpleError::new(1, msg));
}

Ok(settings)
}

pub fn find_matching_pids(settings: &Settings) -> UResult<Vec<ProcessInformation>> {
let mut pids = collect_matched_pids(settings)?;

if pids.is_empty() {
if !settings.full && settings.regex.as_str().len() > 15 {
let msg = format!("pattern that searches for process name longer than 15 characters will result in zero matches\n\
Try `{} -f' option to match against the complete command line.", uucore::util_name());
return Err(USimpleError::new(1, msg));
}

uucore::error::set_exit_code(1);
Ok(pids)
} else {
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