cli: rename ui.default-revset to revsets.log

I plan to add `revsets.short-prefixes` and `revsets.immutable` soon,
and I think `[revsets]` seems like reasonable place to put them. It
seems consistent with our `[templates]` section. However, it also
suffers from the same problem as that section, which is that the
difference between `[templates]` and `[template-aliases]` is not
clear. We can decide about about templates and revsets later.

CHANGELOG.md

@@ -27,6 +27,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   without arguments is now called `visible_heads()`. `heads()` with one argument
   is unchanged.
 
+* The `ui.default-revset` config was renamed to `revsets.log`.
+
 ### New features
 
 * `jj git push --deleted` will remove all locally deleted branches from the remote.

docs/config.md

@@ -141,6 +141,15 @@ ui.default-command = "log"
 ui.diff.format = "git"
 ```
 
+### Default revisions to log
+
+You can configure the revisions `jj log` without `-r` should show.
+
+```toml
+# Show commits that are not in `main`
+revsets.log = "main.."
+```
+
 ### Graph style
 
 ```toml

lib/src/settings.rs

@@ -136,11 +136,15 @@ impl UserSettings {
     }
 
     pub fn default_revset(&self) -> String {
-        self.config
-            .get_string("ui.default-revset")
-            .unwrap_or_else(|_| {
-                "@ | (remote_branches() | tags()).. | ((remote_branches() | tags())..)-".to_string()
-            })
+        self.config.get_string("revsets.log").unwrap_or_else(|_| {
+            // For compatibility with old config files (<0.8.0)
+            self.config
+                .get_string("ui.default-revset")
+                .unwrap_or_else(|_| {
+                    "@ | (remote_branches() | tags()).. | ((remote_branches() | tags())..)-"
+                        .to_string()
+                })
+        })
     }
 
     pub fn signature(&self) -> Signature {

src/commands/mod.rs

@@ -328,7 +328,7 @@ struct StatusArgs {}
 /// Show commit history
 #[derive(clap::Args, Clone, Debug)]
 struct LogArgs {
-    /// Which revisions to show. Defaults to the `ui.default-revset` setting,
+    /// Which revisions to show. Defaults to the `revsets.log` setting,
     /// or `@ | (remote_branches() | tags()).. | ((remote_branches() |
     /// tags())..)-` if it is not set.
     #[arg(long, short)]

src/config-schema.json

@@ -56,11 +56,6 @@
                     "description": "Default command to run when no explicit command is given",
                     "default": "log"
                 },
-                "default-revset": {
-                    "type": "string",
-                    "description": "Default set of revisions to show when no explicit revset is given for jj log and similar commands",
-                    "default": "@ | (remote_branches() | tags()).. | ((remote_branches() | tags())..)-"
-                },
                 "color": {
                     "description": "Whether to colorize command output",
                     "enum": [
@@ -267,6 +262,20 @@
                 }
             }
         },
+        "revsets": {
+            "type": "object",
+            "description": "Revset expressions used by various commands",
+            "properties": {
+                "log": {
+                    "type": "string",
+                    "description": "Default set of revisions to show when no explicit revset is given for jj log and similar commands",
+                    "default": "@ | (remote_branches() | tags()).. | ((remote_branches() | tags())..)-"
+                }
+            },
+            "additionalProperties": {
+                "type": "string"
+            }
+        },
         "revset-aliases": {
             "type": "object",
             "description": "Custom symbols/function aliases that can used in revset expressions",

tests/test_log_command.rs

@@ -788,7 +788,7 @@ fn test_default_revset() {
     test_env.jj_cmd_success(&repo_path, &["describe", "-m", "add a file"]);
 
     // Set configuration to only show the root commit.
-    test_env.add_config(r#"ui.default-revset = "root""#);
+    test_env.add_config(r#"revsets.log = "root""#);
 
     // Log should only contain one line (for the root commit), and not show the
     // commit created above.
@@ -813,7 +813,7 @@ fn test_default_revset_per_repo() {
     // Set configuration to only show the root commit.
     std::fs::write(
         repo_path.join(".jj/repo/config.toml"),
-        r#"ui.default-revset = "root""#,
+        r#"revsets.log = "root""#,
     )
     .unwrap();