alias: add alias action to send a CTCP ACTION to a channel or a nick (issue #1577)

ChangeLog.adoc

@@ -40,6 +40,7 @@ New features::
   * api: add optional argument with version in info "version_number"
   * alias: use lower case for default aliases, rename all aliases to lower case on upgrade (issue #1872)
   * alias: add `$&` to replace all arguments with double quotes escaped (issue #1140, issue #1190)
+  * alias: add alias `action` to send a CTCP ACTION to a channel or a nick (issue #1577)
   * irc: rename "ssl" options to "tls", connect with TLS and port 6697 by default
   * irc: add support of capabilities "batch" and "draft/multiline" (issue #1292, issue #1923)
   * irc: add support of capability "echo-message" (issue #139)

src/plugins/alias/alias-config.c

@@ -34,6 +34,7 @@ struct t_config_section *alias_config_section_completion = NULL;
 
 char *alias_default[][3] =
 { { "aaway",   "allserv /away",        NULL            },
+  { "action",  "ctcp $1 action $2-",   NULL            },
   { "anick",   "allserv /nick",        NULL            },
   { "beep",    "print -beep",          NULL            },
   { "bye",     "quit",                 NULL            },