git config always changes the encoding of `.git/config` and `~/.gitconfig` to value of _ENCODE_FILE_NEW

[Christopher-Chappell]

Introducing any git config commands into a Jenkins pipeline causes the next run that touches that repository to fail. Why? Because even if I chtag the config file to ISO8859-1, the moment git modifies it it goes back to IBM-1047.

Jenkins does not tolerate a git config file anywhere that is encoded IBM-1047. If it finds one, the pipeline fails with the following error:

Fetching changes from the remote Git repository
ERROR: Checkout failed
org.eclipse.jgit.errors.ConfigInvalidException: Invalid line in config file
	at PluginClassLoader for git-client//org.eclipse.jgit.lib.Config.fromTextRecurse(Config.java:1236)
	at PluginClassLoader for git-client//org.eclipse.jgit.lib.Config.fromText(Config.java:1164)
	at PluginClassLoader for git-client//org.eclipse.jgit.storage.file.FileBasedConfig.load(FileBasedConfig.java:164)
	at PluginClassLoader for git-client//org.eclipse.jgit.util.FileUtils.readWithRetries(FileUtils.java:733)
	at PluginClassLoader for git-client//org.eclipse.jgit.storage.file.FileBasedConfig.load(FileBasedConfig.java:128)

As you can imagine, I am interested in making sure that any git config files stay ISO8859-1.

[IgorTodorovskiIBM]

Is this only occurring within Jenkins or can you reproduce it manually with the same userid and environment variables?

What environment variables are being set currently?

It's very likely an environment variable setting as on my system it's still set as ISO8859-1:

[ITODORO@ZOSCAN2B ~/projects/protobuf_new]$ ls -lT ~/.gitconfig
t ISO8859-1   T=on  -rw-rw-r--   1 ITODORO  BASIC        570 Jan  8 06:47 /home/itodoro/.gitconfig
[ITODORO@ZOSCAN2B ~/projects/protobuf_new]$ git config  set --global core.filemode true
[ITODORO@ZOSCAN2B ~/projects/protobuf_new]$ ls -lT ~/.gitconfig
t ISO8859-1   T=on  -rw-rw-r--   1 ITODORO  BASIC        587 Jan 13 22:04 /home/itodoro/.gitconfig
[ITODORO@ZOSCAN2B ~/projects/protobuf_new]$ cat /home/itodoro/.gitconfig
[user]
        name = Igor Todorovski
  pager = less
        email = itodorov@ca.ibm.com
[core]
  editor = vim
        preloadIndex = false
        filemode = true

[Christopher-Chappell]

Looks like it's the _ENCODE_FILE_NEW variable:

chappc@/u/chappc/git/repo$ export _ENCODE_FILE_NEW=ISO8859-1
chappc@/u/chappc/git/repo$ git config core.editor nano
chappc@/u/chappc/git/repo$ ls -T .git
t ISO8859-1   T=on  FETCH_HEAD
t ISO8859-1   T=on  HEAD
t ISO8859-1   T=on  ORIG_HEAD
                    branches
t ISO8859-1   T=on  config
- untagged    T=off description
                    hooks
t ISO8859-1   T=on  index
                    info
                    logs
                    objects
t IBM-1047    T=on  packed-refs
                    refs
chappc@/u/chappc/git/repo$ export _ENCODE_FILE_NEW=IBM-1047 
chappc@/u/chappc/git/repo$ git config core.editor vim 
chappc@/u/chappc/git/repo$ ls -T .git
t ISO8859-1   T=on  FETCH_HEAD
t ISO8859-1   T=on  HEAD
t ISO8859-1   T=on  ORIG_HEAD
                    branches
t IBM-1047    T=on  config
- untagged    T=off description
                    hooks
t ISO8859-1   T=on  index
                    info
                    logs
                    objects
t IBM-1047    T=on  packed-refs
                    refs