Enable zsh completion of sender addresses

This parses the config file to find the email addresses.

Because the string interpolation happens at run time and not at load
time of the completion script the python snippet is run on each
completion attempt.  This has the advantage that changes to the config
file are picked up without restarting the shell and the snippet is
simple enough to not impose a real delay in completion.

1 files changed, 13 insertions, 1 deletions

diff --git a/extra/completion/alot-completion.zsh b/extra/completion/alot-completion.zsh
index bbd3c54d..34d48a61 100644
--- a/extra/completion/alot-completion.zsh
+++ b/extra/completion/alot-completion.zsh
@@ -24,6 +24,18 @@ _alot_search()
     '--sort=[sort results]:sorting:((newest_first\:"reverse chronological order" oldest_first\:"chronological order" message_id\:"lexicographically by Message Id"))'
 }
 
+_alot_account_emails()
+{
+  python3 - ${XDG_CONFIG_HOME:-~/.config}/alot/config <<-'EOF'
+	import configobj, sys
+	config = configobj.ConfigObj(infile=sys.argv[1], encoding="UTF8")
+	accounts = config.get("accounts", {})
+	addresses = [accounts[k].get('address') for k in accounts
+							 if type(accounts[k]) is configobj.Section]
+	print(" ".join(addresses), end="")
+	EOF
+}
+
 _alot_compose()
 {
   _arguments -s : \
@@ -31,7 +43,7 @@ _alot_compose()
     '--bcc=[Blind Carbon Copy header]:Recipient (Bcc header):_email_addresses' \
     '--cc=[Carbon Copy header]:Recipient (Cc header):_email_addresses' \
     '--omit_signature[do not add signature]' \
-    '--sender=[From header]' \
+    "--sender=[From header]:Sender account:($(_alot_account_emails))" \
     '--subject=[Subject header]' \
     '--template=[template file to use]' \
     '--to=[To header]:Recipient (To header):_email_addresses' \