Add fish-like command abbreviations

xonsh/xontribs.json

@@ -1,4 +1,9 @@
 {"xontribs": [
+ {"name": "abbrevs",
+  "package": "xonsh",
+  "url": "http://xon.sh",
+  "description": ["Command abbreviations."]
+ },
  {"name": "apt_tabcomplete",
   "package": "xonsh-apt-tabcomplete",
   "url": "https://github.com/DangerOnTheRanger/xonsh-apt-tabcomplete",

xontrib/abbrevs.py

@@ -0,0 +1,33 @@
+"""Command abbreviations."""
+
+import builtins
+from xonsh.platform import ptk_shell_type
+
+__all__ = ()
+
+builtins.__xonsh__.ctx["abbrevs"] = dict()
+
+
+def expand_abbrev(buffer):
+    word = buffer.document.get_word_before_cursor()
+    if "abbrevs" not in builtins.__xonsh__.ctx.keys():
+        return
+    abbrevs = builtins.__xonsh__.ctx["abbrevs"]
+    if word in abbrevs.keys():
+        buffer.delete_before_cursor(count=len(word))
+        buffer.insert_text(abbrevs[word])
+
+
+@events.on_ptk_create
+def custom_keybindings(bindings, **kw):
+
+    if ptk_shell_type() == "prompt_toolkit2":
+        handler = bindings.add
+    else:
+        handler = bindings.registry.add_binding
+
+    @handler(" ")
+    def space(event):
+        buffer = event.app.current_buffer
+        expand_abbrev(buffer)
+        buffer.insert_text(" ")