Release v0.13.0

.changes/v0.13.0.md

@@ -0,0 +1,40 @@
+## v0.13.0 - 2026-04-11
+
+
+### Features
+
+
+#### Added
+
+##### Multi-target file mappings in `repoverlay.ccl`
+
+A source file can now map to multiple target paths using duplicate keys in the `mappings` section:
+
+``` mappings =   .editorconfig = .editorconfig   .editorconfig = packages/frontend/.editorconfig ```
+
+This copies the source file to every listed target. Single-value mappings continue to work as before. All targets are tracked in the overlay state file, so `remove` cleans up every copy.
+
+
+### Fixes
+
+
+#### Fixed
+
+##### Log warnings when .ccl state files fail to parse instead of silently skipping
+
+Previously, corrupted or unparseable .ccl state files were silently ignored. Now repoverlay logs a warning message identifying the problematic file before skipping it, making it easier to diagnose configuration issues.
+
+
+### Command: `library`
+
+
+#### Fixed
+
+##### Surface file read errors in show_file_diff instead of silently treating as empty
+
+Previously, if reading either the existing or overlay file failed in show_file_diff, the error was silently swallowed and the file was treated as empty. Now the function logs a warning and prints a user-visible warning message identifying the problematic file before returning early.
+
+##### Validate overlay names reject path separators in release builds
+
+`OverlayName` previously only checked for forward slashes via `debug_assert`, meaning invalid names with path separators (including backslashes) could slip through in release builds. Added `OverlayName::try_new` which returns an error for names containing `/` or `\`, and updated all user-input paths to use it.
+

CHANGELOG.md

@@ -5,6 +5,47 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## v0.13.0 - 2026-04-11
+
+
+### Features
+
+
+#### Added
+
+##### Multi-target file mappings in `repoverlay.ccl`
+
+A source file can now map to multiple target paths using duplicate keys in the `mappings` section:
+
+``` mappings =   .editorconfig = .editorconfig   .editorconfig = packages/frontend/.editorconfig ```
+
+This copies the source file to every listed target. Single-value mappings continue to work as before. All targets are tracked in the overlay state file, so `remove` cleans up every copy.
+
+
+### Fixes
+
+
+#### Fixed
+
+##### Log warnings when .ccl state files fail to parse instead of silently skipping
+
+Previously, corrupted or unparseable .ccl state files were silently ignored. Now repoverlay logs a warning message identifying the problematic file before skipping it, making it easier to diagnose configuration issues.
+
+
+### Command: `library`
+
+
+#### Fixed
+
+##### Surface file read errors in show_file_diff instead of silently treating as empty
+
+Previously, if reading either the existing or overlay file failed in show_file_diff, the error was silently swallowed and the file was treated as empty. Now the function logs a warning and prints a user-visible warning message identifying the problematic file before returning early.
+
+##### Validate overlay names reject path separators in release builds
+
+`OverlayName` previously only checked for forward slashes via `debug_assert`, meaning invalid names with path separators (including backslashes) could slip through in release builds. Added `OverlayName::try_new` which returns an error for names containing `/` or `\`, and updated all user-input paths to use it.
+
+
 ## v0.12.0 - 2026-03-27
 
 

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "repoverlay"
-version = "0.12.0"
+version = "0.13.0"
 edition = "2024"
 rust-version = "1.91"
 authors = ["Tyler Butler <tyler@tylerbutler.com>"]