Merge remote-tracking branch 'origin/master' into next

Author: ilbertt

CHANGELOG.md

@@ -21,6 +21,13 @@
 * Non-breaking changes:
   + Supports parsing the arguments' names for `func` and `service` (init args).
 
+## 2025-08-04
+
+### Candid 0.10.17
+
+* Non-breaking changes:
+  + Fixes a regression in pretty printing when concatenating an empty list of documents
+
 ## 2025-07-29
 
 ### Candid 0.10.16

Cargo.lock

@@ -1,7 +1,7 @@
 [package]
 name = "candid"
 # sync with the version in `candid_derive/Cargo.toml`
-version = "0.10.16"
+version = "0.10.17"
 edition = "2021"
 rust-version.workspace = true
 authors = ["DFINITY Team"]
@@ -16,7 +16,7 @@ keywords = ["internet-computer", "idl", "candid", "dfinity"]
 include = ["src", "Cargo.toml", "LICENSE", "README.md"]
 
 [dependencies]
-candid_derive = { path = "../candid_derive", version = "=0.10.16" }
+candid_derive = { path = "../candid_derive", version = "=0.10.17" }
 ic_principal = { path = "../ic_principal", version = "0.1.0" }
 binread = { version = "2.2", features = ["debug_template"] }
 byteorder = "1.5.0"

rust/bench/Cargo.lock

@@ -55,6 +55,10 @@ pub fn concat<'a, D>(docs: D, sep: &'a str) -> RcDoc<'a>
 where
     D: Iterator<Item = RcDoc<'a>>,
 {
+    let mut docs = docs.peekable();
+    if docs.peek().is_none() {
+        return RcDoc::nil();
+    }
     let singleline = RcDoc::intersperse(docs, RcDoc::text(sep).append(RcDoc::line()));
     let multiline = singleline.clone().append(sep);
     multiline.flat_alt(singleline)
@@ -85,3 +89,16 @@ pub fn quote_ident(id: &str) -> RcDoc {
         .append("'")
         .append(RcDoc::space())
 }
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn concat_empty() {
+        let t = concat(vec![].into_iter(), ",")
+            .pretty(LINE_WIDTH)
+            .to_string();
+        assert_eq!(t, "");
+    }
+}

rust/candid/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "candid_derive"
 # sync with the version in `candid/Cargo.toml`
-version = "0.10.16"
+version = "0.10.17"
 edition = "2021"
 rust-version.workspace = true
 authors = ["DFINITY Team"]

rust/candid/src/pretty/utils.rs

@@ -1,6 +1,6 @@
 [package]
 name = "didc"
-version = "0.5.0"
+version = "0.5.1"
 authors = ["DFINITY Team"]
 edition = "2021"