From a18d50b77759d6305b99ff59baa1ccaf9d644a88 Mon Sep 17 00:00:00 2001
From: Nathan Vegdahl <cessen@cessen.com>
Date: Mon, 21 Jun 2021 12:36:01 -0700
Subject: [PATCH] Add command to set the document's default line ending.
---
helix-term/src/commands.rs | 46 ++++++++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)
diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index 5cb30da6..63a4d901 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -1160,6 +1160,45 @@ mod cmd {
}
}
+ /// Sets or reports the current document's line ending setting.
+ fn set_line_ending(editor: &mut Editor, args: &[&str], event: PromptEvent) {
+ use LineEnding::*;
+
+ // If no argument, report current line ending setting.
+ if args.is_empty() {
+ let line_ending = current!(editor).1.line_ending;
+ editor.set_status(match line_ending {
+ Crlf => "crlf".into(),
+ LF => "line feed".into(),
+ FF => "form feed".into(),
+ CR => "carriage return".into(),
+ Nel => "next line".into(),
+
+ // These should never be a document's default line ending.
+ VT | LS | PS => "error".into(),
+ });
+ return;
+ }
+
+ // Attempt to parse argument as a line ending.
+ let line_ending = match args.get(0) {
+ // We check for CR first because it shares a common prefix with CRLF.
+ Some(arg) if "cr".starts_with(&arg.to_lowercase()) => Some(CR),
+ Some(arg) if "crlf".starts_with(&arg.to_lowercase()) => Some(Crlf),
+ Some(arg) if "lf".starts_with(&arg.to_lowercase()) => Some(LF),
+ Some(arg) if "ff".starts_with(&arg.to_lowercase()) => Some(FF),
+ Some(arg) if "nel".starts_with(&arg.to_lowercase()) => Some(Nel),
+ _ => None,
+ };
+
+ if let Some(le) = line_ending {
+ doc_mut!(editor).line_ending = le;
+ } else {
+ // Invalid argument.
+ editor.set_error(format!("invalid line ending '{}'", args[0],));
+ }
+ }
+
fn earlier(editor: &mut Editor, args: &[&str], event: PromptEvent) {
let uk = match args.join(" ").parse::<helix_core::history::UndoKind>() {
Ok(uk) => uk,
@@ -1392,6 +1431,13 @@ mod cmd {
fun: set_indent_style,
completer: None,
},
+ TypableCommand {
+ name: "line-ending",
+ alias: None,
+ doc: "Set the document's default line ending. Options: crlf, lf, cr, ff, nel.",
+ fun: set_line_ending,
+ completer: None,
+ },
TypableCommand {
name: "earlier",
alias: Some("ear"),