v1.2.1 (2025-12-16)

Recent 47af80319d (in Telemere v1.2.0)
accidentally removed errors from Timbre->Telemere signals.

CHANGELOG.md

@@ -2,6 +2,25 @@ This project uses [**Break Versioning**](https://www.taoensso.com/break-versioni
 
 ---
 
+# `v1.2.1` (2025-12-16)
+
+## 📦 Dependencies
+
+Available on Clojars:
+
+1. [Telemere](https://clojars.org/com.taoensso/telemere/versions/1.2.1) - main dep
+2. [SLF4J provider](https://clojars.org/com.taoensso/telemere-slf4j/versions/1.2.1) - extra dep to [send Java logging](https://github.com/taoensso/telemere/wiki/3-Config#java-logging) to Telemere
+
+This project uses [Break Versioning](https://www.taoensso.com/break-versioning).
+
+## Release notes
+
+This is a **hotfix release** to fix a regression in v1.2.0 that prevented errors from correctly appearing via the Timbre->Telemere appender.
+
+This should be a safe upgrade for users of v1.2.0, apologies for the trouble! - Peter Taoussanis
+
+---
+
 # `v1.2.0` (2025-12-09)
 
 ## 📦 Dependencies
@@ -15,12 +34,14 @@ This project uses [Break Versioning](https://www.taoensso.com/break-versioning).
 
 ## Release notes
 
-This is a **maintenance and feature release** that should be a safe upgrade for users of v1.1.x. Please **report any unexpected problems** on [GitHub](https://github.com/taoensso/telemere/issues) or the [Slack channel](https://www.taoensso.com/telemere/slack) 🙏 - [Peter Taoussanis](https://www.taoensso.com)
+This is a **maintenance and feature release** that should be a safe upgrade for users of v1.1.x, though there have been a few small **changes to signal content** relevant to a very small number of users (see the ➤ items below).
+
+Please **report any unexpected problems** on [GitHub](https://github.com/taoensso/telemere/issues) or the [Slack channel](https://www.taoensso.com/telemere/slack) 🙏 - [Peter Taoussanis](https://www.taoensso.com)
 
 ## Since `v1.1.0` (2025-08-22)
 
-- \[mod] SLF4J->Telemere backend: move noisy stuff out of signal data \[e6ce33d]
+- ➤ **\[mod]** SLF4J->Telemere backend: move noisy stuff out of signal data \[e6ce33d]
-- \[mod] Timbre shim API: move noisy `:vargs` out of signal data \[cc680b0
+- ➤ **\[mod]** Timbre shim API: move noisy `:vargs` out of signal data \[cc680b0
 - \[mod] [fix] Timbre->Telemere appender: de-duplicate output formatting \[47af803]
 - \[mod] [fix] Timbre->Telemere appender: fix callsite coords \[b56e1c4]
 - \[fix] OpenTelemetry handler: add missing line info to output \[6155713]

README.md

@@ -1,5 +1,5 @@
 <a href="https://www.taoensso.com/clojure" title="More stuff by @ptaoussanis at www.taoensso.com"><img src="https://www.taoensso.com/open-source.png" alt="Taoensso open source" width="340"/></a>  
-[**API**][cljdoc] | [**Wiki**][GitHub wiki] | [Slack][] | Latest release: [v1.2.0](../../releases/tag/v1.2.0) (2025-12-09)
+[**API**][cljdoc] | [**Wiki**][GitHub wiki] | [Slack][] | Latest release: [v1.2.1](../../releases/tag/v1.2.1) (2025-12-16)
 
 [![Clj tests][Clj tests SVG]][Clj tests URL]
 [![Cljs tests][Cljs tests SVG]][Cljs tests URL]
@@ -200,7 +200,7 @@ See [examples.cljc](https://github.com/taoensso/telemere/blob/master/examples.cl
 ## Comparisons
 
 - Telemere [compared](../../wiki/5-Migrating#from-timbre) to [Timbre](https://www.taoensso.com/timbre) (Telemere's predecessor)
-- Telemere [compared](../../wiki/6-FAQ#how-does-telemere-compare-to-mulog) to [μ/log](https://github.com/BrunoBonacci/mulog) (structured micro-logging library)
+- Telemere [compared](../../wiki/6-FAQ#how-does-telemere-compare-to-%CE%BClog) to [μ/log](https://github.com/BrunoBonacci/mulog) (structured micro-logging library)
 
 ## Videos
 

main/project.clj

@@ -1,4 +1,4 @@
-(defproject com.taoensso/telemere "1.2.0"
+(defproject com.taoensso/telemere "1.2.1"
   :author "Peter Taoussanis <https://www.taoensso.com>"
   :description "Structured logs and telemetry for Clojure/Script"
   :url "https://www.taoensso.com/telemere"
@@ -50,7 +50,7 @@
      [org.clojure/test.check        "1.1.2"]
      [org.clojure/tools.logging     "1.3.0"]
      [org.slf4j/slf4j-api           "2.0.17"]
-     [com.taoensso/telemere-slf4j   "1.2.0"]
+     [com.taoensso/telemere-slf4j   "1.2.1"]
      #_[org.slf4j/slf4j-simple      "2.0.16"]
      #_[org.slf4j/slf4j-nop         "2.0.16"]
      #_[io.github.paintparty/bling  "0.4.2"]

main/src/taoensso/telemere/timbre.cljc

@@ -190,11 +190,11 @@
    :min-level nil
    :fn
    (fn [data]
-     (let [{:keys [instant level context msg-type vargs
+     (let [{:keys [instant level context ?err msg-type vargs
                    ?ns-str ?file ?line ?column]} data
 
            format-msg? (enc/identical-kw? msg-type :f)
-           [error msg vargs] (parse-vargs format-msg? vargs)]
+           [_error msg vargs] (parse-vargs format-msg? vargs)]
 
        (taoensso.telemere/signal!
          {:kind :timbre
@@ -206,7 +206,7 @@
           :coords (when ?line [?line ?column])
           :file   ?file ; Non-standard, goes to kvs
 
-          :error  error
+          :error  ?err
           :msg    (when msg-type msg)
 
           :timbre/vargs vargs})))})

slf4j/project.clj

@@ -1,4 +1,4 @@
-(defproject com.taoensso/telemere-slf4j "1.2.0"
+(defproject com.taoensso/telemere-slf4j "1.2.1"
   :author "Peter Taoussanis <https://www.taoensso.com>"
   :description "Telemere backend/provider for SLF4J API v2"
   :url "https://www.taoensso.com/telemere"
@@ -18,7 +18,7 @@
    {:dependencies
     [[org.clojure/clojure   "1.12.3"]
      [org.slf4j/slf4j-api   "2.0.17"]
-     [com.taoensso/telemere "1.2.0"]]}
+     [com.taoensso/telemere "1.2.1"]]}
 
    :dev
    {:plugins