WIP: auto-wrap; add config option (helix-editor#2274)

helix-core/src/syntax.rs

@@ -118,6 +118,7 @@ pub struct LanguageConfiguration {
     pub block_comment_tokens: Option<Vec<BlockCommentToken>>,
     pub text_width: Option<usize>,
     pub soft_wrap: Option<SoftWrap>,
+    pub auto_wrap: Option<AutoWrap>,
 
     #[serde(default)]
     pub auto_format: bool,
@@ -856,6 +857,17 @@ pub struct SoftWrap {
     pub wrap_at_text_width: Option<bool>,
 }
 
+#[derive(Debug, Clone, Default, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(default, rename_all = "kebab-case", deny_unknown_fields)]
+pub struct AutoWrap {
+    /// Hard wrap lines that exceed text-width. Default to off.
+    // NOTE: Option on purpose because the struct is shared between language
+    // config and global config.
+    // By default the option is None so that the language config falls back to
+    // the global config unless explicitly set.
+    pub enable: Option<bool>,
+}
+
 #[derive(Debug)]
 struct FileTypeGlob {
     glob: globset::Glob,

helix-view/src/editor.rs

@@ -43,7 +43,9 @@ use anyhow::{anyhow, bail, Error};
 pub use helix_core::diagnostic::Severity;
 use helix_core::{
     auto_pairs::AutoPairs,
-    syntax::{self, AutoPairConfig, IndentationHeuristic, LanguageServerFeature, SoftWrap},
+    syntax::{
+        self, AutoPairConfig, AutoWrap, IndentationHeuristic, LanguageServerFeature, SoftWrap,
+    },
     Change, LineEnding, Position, Range, Selection, NATIVE_LINE_ENDING,
 };
 use helix_dap as dap;
@@ -324,6 +326,7 @@ pub struct Config {
     /// Whether to color modes with different colors. Defaults to `false`.
     pub color_modes: bool,
     pub soft_wrap: SoftWrap,
+    pub auto_wrap: AutoWrap,
     /// Workspace specific lsp ceiling dirs
     pub workspace_lsp_roots: Vec<PathBuf>,
     /// Which line ending to choose for new documents. Defaults to `native`. i.e. `crlf` on Windows, otherwise `lf`.
@@ -966,6 +969,9 @@ impl Default for Config {
                 enable: Some(false),
                 ..SoftWrap::default()
             },
+            auto_wrap: AutoWrap {
+                enable: Some(false),
+            },
             text_width: 80,
             completion_replace: false,
             workspace_lsp_roots: Vec::new(),