Backward compat format settings

assets/settings/default.json

@@ -43,7 +43,7 @@
     //     "default_dock_anchor": "expanded"
     "default_dock_anchor": "right",
     // Whether or not to perform a buffer format before saving
-    "format_on_save": true,
+    "format_on_save": "off",
     // How to perform a buffer format. This setting can take two values:
     //
     // 1. Format code using the current language server:

crates/project/src/project.rs

@@ -40,7 +40,7 @@ use postage::watch;
 use rand::prelude::*;
 use search::SearchQuery;
 use serde::Serialize;
-use settings::Settings;
+use settings::{FormatOnSave, Formatter, Settings};
 use sha2::{Digest, Sha256};
 use similar::{ChangeTag, TextDiff};
 use std::{
@@ -3120,12 +3120,11 @@ impl Project {
                     )
                 });
 
-                if trigger == FormatTrigger::Save && !format_on_save {
-                    continue;
-                }
+                let transaction = match (formatter, format_on_save) {
+                    (_, FormatOnSave::Off) if trigger == FormatTrigger::Save => continue,
 
-                let transaction = match formatter {
-                    settings::Formatter::LanguageServer => Self::format_via_lsp(
+                    (Formatter::LanguageServer, FormatOnSave::On | FormatOnSave::Off)
+                    | (_, FormatOnSave::LanguageServer) => Self::format_via_lsp(
                         &this,
                         &buffer,
                         &buffer_abs_path,
@@ -3136,7 +3135,11 @@ impl Project {
                     .await
                     .context("failed to format via language server")?,
 
-                    settings::Formatter::External { command, arguments } => {
+                    (
+                        Formatter::External { command, arguments },
+                        FormatOnSave::On | FormatOnSave::Off,
+                    )
+                    | (_, FormatOnSave::External { command, arguments }) => {
                         Self::format_via_external_command(
                             &buffer,
                             &buffer_abs_path,

crates/settings/src/settings.rs

@@ -58,7 +58,7 @@ pub struct EditorSettings {
     pub hard_tabs: Option<bool>,
     pub soft_wrap: Option<SoftWrap>,
     pub preferred_line_length: Option<u32>,
-    pub format_on_save: Option<bool>,
+    pub format_on_save: Option<FormatOnSave>,
     pub formatter: Option<Formatter>,
     pub enable_language_server: Option<bool>,
 }
@@ -70,6 +70,17 @@ pub enum SoftWrap {
     EditorWidth,
     PreferredLineLength,
 }
+#[derive(Clone, Debug, Deserialize, PartialEq, Eq, JsonSchema)]
+#[serde(rename_all = "snake_case")]
+pub enum FormatOnSave {
+    On,
+    Off,
+    LanguageServer,
+    External {
+        command: String,
+        arguments: Vec<String>,
+    },
+}
 
 #[derive(Clone, Debug, Deserialize, PartialEq, Eq, JsonSchema)]
 #[serde(rename_all = "snake_case")]
@@ -324,8 +335,8 @@ impl Settings {
         self.language_setting(language, |settings| settings.preferred_line_length)
     }
 
-    pub fn format_on_save(&self, language: Option<&str>) -> bool {
-        self.language_setting(language, |settings| settings.format_on_save)
+    pub fn format_on_save(&self, language: Option<&str>) -> FormatOnSave {
+        self.language_setting(language, |settings| settings.format_on_save.clone())
     }
 
     pub fn formatter(&self, language: Option<&str>) -> Formatter {
@@ -364,7 +375,7 @@ impl Settings {
                 hard_tabs: Some(false),
                 soft_wrap: Some(SoftWrap::None),
                 preferred_line_length: Some(80),
-                format_on_save: Some(true),
+                format_on_save: Some(FormatOnSave::On),
                 formatter: Some(Formatter::LanguageServer),
                 enable_language_server: Some(true),
             },