Add shell/mu

shell/mu/.offlineimaprc

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+[general]
+accounts = Lissner,Gmail
+pythonfile = ~/.dotfiles/shell/mu/offlineimaprc.py
+
+[Account Gmail]
+localrepository = LocalGmail
+remoterepository = RepositoryGmail
+autorefresh = 5
+quick = 10
+postsynchook = mu index --maildir ~/.mail/gmail.com
+status_backend = sqlite
+
+[Repository LocalGmail]
+type = Maildir
+localfolders = ~/.mail/gmail.com
+nametrans = nametrans
+
+[Repository RepositoryGmail]
+type = Gmail
+remoteusereval = get_pass("gmail.com")["user"]
+remotepasseval = get_pass("gmail.com")["password"]
+folderfilter = folder_filter
+ssl = true
+sslcacertfile = /usr/local/etc/openssl/cert.pem  # This will only work for macOS
+sslcacertfile = /etc/ssl/certs/ca-certificates.crt
+nametrans = nametrans_reverse
+
+###
+[Account Lissner]
+localrepository = LocalLissner
+remoterepository = RepositoryLissner
+quick = 10
+postsynchook = mu index --maildir ~/.mail/lissner.net
+status_backend = sqlite
+
+[Repository LocalLissner]
+type = Maildir
+localfolders = ~/.mail/lissner.net
+nametrans = nametrans
+
+[Repository RepositoryLissner]
+type = Gmail
+remoteusereval = get_pass("lissner.net")["user"]
+remotepasseval = get_pass("lissner.net")["password"]
+folderfilter = folder_filter
+ssl = true
+sslcacertfile = /usr/local/etc/openssl/cert.pem  # This will only work for macOS
+sslcacertfile = /etc/ssl/certs/ca-certificates.crt
+nametrans = nametrans_reverse

shell/mu/install

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+#!/usr/bin/env bash
+
+case "$OSTYPE" in
+    darwin*)
+        brew install offlineimap
+        brew install mu --with-emacs
+        ;;
+    linux*)
+        if [[ -f /etc/arch-release ]]; then
+            pacaur --needed --noconfirm -S offlineimap mu
+        fi
+        ;;
+esac

shell/mu/offlineimaprc.py

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+#!/usr/bin/env python
+
+from subprocess import check_output
+from re import sub
+
+def get_pass(account):
+    data = check_output("pass email/" + account, shell=True).splitlines()
+    password = data[0]
+    tmp = [x for x in data if x.startswith('address:')]
+    user = ""
+    if len(tmp) > 0:
+        user = tmp[0].split(":", 1)[1]
+
+    return {"password": password, "user": user}
+
+def folder_filter(name):
+    return not (name in ['[Gmail]/Spam', '[Gmail]/Important', '[Gmail]/All Mail'] or
+                name.startswith('[Airmail]'))
+
+def nametrans(name):
+    return sub('^(Starred|Sent Mail|Drafts|Trash|All Mail|Spam)$', '[Gmail]/\\1', name)
+
+def nametrans_reverse(name):
+    return sub('^(\[Gmail\]/)', '', name)