don't break on hyphen with :reflow

book/src/configuration.md

@@ -65,6 +65,7 @@ Its settings will be merged with the configuration directory `config.toml` and t
 | `workspace-lsp-roots` | Directories relative to the workspace root that are treated as LSP roots. Should only be set in `.helix/config.toml` | `[]` |
 | `default-line-ending` | The line ending to use for new documents. Can be `native`, `lf`, `crlf`, `ff`, `cr` or `nel`. `native` uses the platform's native line ending (`crlf` on Windows, otherwise `lf`). | `native` |
 | `insert-final-newline` | Whether to automatically insert a trailing line-ending on write if missing | `true` |
+| `no-break-on-hyphen` | Disable linebreak on hyphen when using `:reflow` | `true` |
 
 ### `[editor.statusline]` Section
 

helix-core/src/wrap.rs

@@ -1,7 +1,16 @@
 use smartstring::{LazyCompact, SmartString};
+use textwrap::{word_splitters::WordSplitter, Options};
 
 /// Given a slice of text, return the text re-wrapped to fit it
 /// within the given width.
-pub fn reflow_hard_wrap(text: &str, text_width: usize) -> SmartString<LazyCompact> {
-    textwrap::refill(text, text_width).into()
+pub fn reflow_hard_wrap(
+    text: &str,
+    text_width: usize,
+    no_break_on_hyphen: bool,
+) -> SmartString<LazyCompact> {
+    let mut options = Options::new(text_width);
+    if no_break_on_hyphen {
+        options.word_splitter = WordSplitter::NoHyphenation;
+    }
+    textwrap::refill(text, options).into()
 }

helix-term/src/commands/typed.rs

@@ -2078,6 +2078,7 @@ fn reflow(
 
     let scrolloff = cx.editor.config().scrolloff;
     let cfg_text_width: usize = cx.editor.config().text_width;
+    let cfg_no_break_on_hyphen: bool = cx.editor.config().no_break_on_hyphen;
     let (view, doc) = current!(cx.editor);
 
     // Find the text_width by checking the following sources in order:
@@ -2096,7 +2097,8 @@ fn reflow(
     let selection = doc.selection(view.id);
     let transaction = Transaction::change_by_selection(rope, selection, |range| {
         let fragment = range.fragment(rope.slice(..));
-        let reflowed_text = helix_core::wrap::reflow_hard_wrap(&fragment, text_width);
+        let reflowed_text =
+            helix_core::wrap::reflow_hard_wrap(&fragment, text_width, cfg_no_break_on_hyphen);
 
         (range.from(), range.to(), Some(reflowed_text))
     });

helix-view/src/editor.rs

@@ -291,6 +291,8 @@ pub struct Config {
     pub insert_final_newline: bool,
     /// Enables smart tab
     pub smart_tab: Option<SmartTabConfig>,
+    /// Disable ":reflow" break on hyphen (default false)
+    pub no_break_on_hyphen: bool,
 }
 
 #[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Eq, PartialOrd, Ord)]
@@ -846,6 +848,7 @@ impl Default for Config {
             default_line_ending: LineEndingConfig::default(),
             insert_final_newline: true,
             smart_tab: Some(SmartTabConfig::default()),
+            no_break_on_hyphen: true,
         }
     }
 }