Issues

• Parse errors after a multi-line string report a line number that is too small

  lightbend/config#885 · Filter by author kastoestoramadus opened on Oct 6, 2026

• Unicode escape in a quoted string accepts a sign and non-ASCII digits; "\u-041" throws IllegalArgumentException

  lightbend/config#884 · Filter by author kastoestoramadus opened on Oct 6, 2026

• Comments inside arrays gain an extra space on every render (render is not a fixed point)

  lightbend/config#883 · Filter by author kastoestoramadus opened on Oct 6, 2026

• Do you really think ConfigFactory.load not throwing anything when it fails to load a resource is okay?

  lightbend/config#858 · Filter by author vancura1337 opened on Sep 8, 2026
  2

• Reads are ~10x slower when a path element contains a digit

  lightbend/config#857 · Filter by author alvint opened on Aug 15, 2026

• Variable substitution fails unexpectedly with overloaded values using resolveWith()

  lightbend/config#855 · Filter by author achohbee opened on Jun 18, 2026
  2

• Proposal: Support inline fallback syntax for substitutions (e.g. ${VAR:default})

  lightbend/config#827 · Filter by author Frotas opened on Oct 3, 2025

• ConfigObject is not immutable - can mutate through keySet()

  lightbend/config#819 · Filter by author A248 opened on Jun 9, 2025

• Missing separator between list elements leads to unintended merge

  lightbend/config#814 · Filter by author andymalakov opened on Apr 15, 2025
  1

• Large number of appends for a single key is very slow to resolve

  lightbend/config#813 · Filter by author karlwalsh opened on Jan 23, 2025
  1

• Inheritance breaks configuration file overlays

  lightbend/config#812 · Filter by author danielyli opened on Dec 10, 2024

• When rendering unresolved ConfigConcatenation, whitespaces are erroneously included

  lightbend/config#806 · Filter by author guerrillalg opened on Jun 26, 2024
  2

• Add a module info

  lightbend/config#803 · Filter by author bowbahdoe opened on Feb 25, 2024
  10

• Regression in environment variable reading behavior

  lightbend/config#802 · Filter by author ilinandrii opened on Jan 16, 2024
  2

• Inconsistent behavior with Overflow/Underflow and Exceptions

  lightbend/config#801 · Filter by author zleonov opened on Nov 30, 2023

• Rendering partially resolved appended array results in invalid configuration

  lightbend/config#800 · Filter by author tmccombs opened on Nov 28, 2023
  2

• Cannot provide environment variables programmatically

  lightbend/config#796 · Filter by author przemek-pokrywka opened on Aug 9, 2023

• Add info about which signing keys will be used for published artifacts.

  lightbend/config#795 · Filter by author yogurtearl opened on Aug 8, 2023
  2

• how to load the config with substitution details

  lightbend/config#794 · Filter by author srikanth-exabeam opened on Aug 1, 2023
  3

• withFallBack is not adding value if not present

  lightbend/config#793 · Filter by author Ruthvik0 opened on Jul 21, 2023

• Something error when use com.typesafe.config API convert conf file to scala bean class

  lightbend/config#792 · Filter by author dragonpic1988 opened on Jul 12, 2023

• Resolving Variable Substitutions Between Multiple Config

  lightbend/config#790 · Filter by author RechaviaAmit opened on Jul 7, 2023
  1

• Community fork?

  lightbend/config#789 · Filter by author radist-nt opened on Jul 6, 2023
  7

• introduce method accepting a list of Objects to add a value

  lightbend/config#785 · Filter by author kerbylane opened on Jun 9, 2023

• Problems with com.typesafe/config and maven-dependency-plugin

  lightbend/config#784 · Filter by author grgrzybek opened on May 24, 2023