new _expand_aliases to, well, expand aliases (13566)

1 files changed, 48 insertions, 0 deletions

diff --git a/Completion/Core/_expand_alias b/Completion/Core/_expand_alias
new file mode 100755
index 000000000..3809a834f
--- /dev/null
+++ b/Completion/Core/_expand_alias
@@ -0,0 +1,48 @@
+#compdef -K _expand_alias complete-word \C-xa
+
+local word expl tmp pre sel what
+
+setopt localoptions ${_comp_options[@]}
+
+if [[ -n $funcstack[2] ]]; then
+  if [[ "$funcstack[2]" = _prefix ]]; then
+    word="$IPREFIX$PREFIX$SUFFIX"
+  else
+    word="$IPREFIX$PREFIX$SUFFIX$ISUFFIX"
+  fi
+  pre=()
+else
+  local curcontext="$curcontext"
+
+  if [[ -z "$curcontext" ]]; then
+    curcontext="expand-alias-word:::"
+  else
+    curcontext="expand-alias-word:${curcontext#*:}"
+  fi
+
+  word="$IPREFIX$PREFIX$SUFFIX$ISUFFIX"
+  pre=(_main_complete - aliases)
+fi
+
+zstyle -s ":completion:${curcontext}:" regular tmp || tmp=yes
+case $tmp in
+always) sel=r;;
+yes|1|true|on) [[ CURRENT -eq 1 ]] && sel=r;;
+esac
+zstyle -T ":completion:${curcontext}:" global && sel="g$sel"
+zstyle -t ":completion:${curcontext}:" disabled && sel="${sel}${(U)sel}"
+
+tmp=
+[[ $sel = *r* ]] && tmp=$aliases[$word]
+[[ -z $tmp && $sel = *g* ]] && tmp=$galiases[$word]
+[[ -z $tmp && $sel = *R* ]] && tmp=$dis_aliases[$word]
+[[ -z $tmp && $sel = *G* ]] && tmp=$dis_galiases[$word]
+
+if [[ -n $tmp ]]; then
+  $pre _wanted aliases expl alias compadd -UQ ${(Q)tmp%%[[:blank:]]##}
+elif (( $#pre )) && zstyle -t ":completion:${curcontext}:" complete; then
+  $pre _aliases -s "$sel" -S ''
+else
+  return 1
+fi
+