From a9f592a964be41b8af4266ffdee3e62914af1438 Mon Sep 17 00:00:00 2001 From: Michael Murphy Date: Fri, 11 Jun 2021 02:39:28 +0100 Subject: [PATCH] Adjusting help message (#4865) On stable, running with `--help|-h` shows information about `file-lines` which is a nightly-only option. This commit removes all mention of `file-lines` from the help message on stable. There is room for improvement here; perhaps a new struct called, e.g., `StableOptions` could be added to complement the existing `GetOptsOptions` struct. `StableOptions` could have a field for each field in `GetOptsOptions`, with each field's value being a `bool` that specifies whether or not the option exists on stable. Or is this adding too much complexity? --- src/bin/main.rs | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/src/bin/main.rs b/src/bin/main.rs index 92fe8b9c514..4b4aa42d935 100644 --- a/src/bin/main.rs +++ b/src/bin/main.rs @@ -178,12 +178,15 @@ fn make_opts() -> Options { opts.optflag("v", "verbose", "Print verbose output"); opts.optflag("q", "quiet", "Print less output"); opts.optflag("V", "version", "Show version information"); - opts.optflagopt( - "h", - "help", - "Show this message or help about a specific topic: `config` or `file-lines`", - "=TOPIC", - ); + let help_topics = if is_nightly { + "`config` or `file-lines`" + } else { + "`config`" + }; + let mut help_topic_msg = "Show this message or help about a specific topic: ".to_owned(); + help_topic_msg.push_str(help_topics); + + opts.optflagopt("h", "help", &help_topic_msg, "=TOPIC"); opts } @@ -437,7 +440,7 @@ fn determine_operation(matches: &Matches) -> Result { return Ok(Operation::Help(HelpOp::None)); } else if topic == Some("config".to_owned()) { return Ok(Operation::Help(HelpOp::Config)); - } else if topic == Some("file-lines".to_owned()) { + } else if topic == Some("file-lines".to_owned()) && is_nightly() { return Ok(Operation::Help(HelpOp::FileLines)); } else { return Err(OperationError::UnknownHelpTopic(topic.unwrap()));