Use LANG=en_US.UTF-8

to fix: invalid byte sequence in US-ASCII (ArgumentError)

Author: k0kubun

bin/commit-email.rb

@@ -136,7 +136,6 @@ def git(*args)
   def with_gitenv
     orig = ENV.to_h.dup
     begin
-      ENV['LANG'] = 'C'
       ENV.delete('GIT_DIR')
       yield
     ensure

hooks/post-receive.sh

@@ -10,6 +10,9 @@ ruby_commit_hook="$(cd "$(dirname $0)"; cd ..; pwd)"
 # Cancel impact of SSH Agent Forwarding to git push by matzbot
 unset SSH_AUTH_SOCK
 
+# Cancel impact from LANG=C set by apache2
+export LANG=en_US.UTF-8
+
 function log() {
   echo -e "[$$: $(date "+%Y-%m-%d %H:%M:%S %Z")] $1"
 }