25733: stub function for dynamic directory name completion

3 files changed, 18 insertions, 1 deletions

diff --git a/Completion/Zsh/Context/.distfiles b/Completion/Zsh/Context/.distfiles
index 8b4acfc7a..1537229f8 100644
--- a/Completion/Zsh/Context/.distfiles
+++ b/Completion/Zsh/Context/.distfiles
@@ -5,6 +5,7 @@ _autocd
 _brace_parameter
 _condition
 _default
+_dynamic_directory_name
 _equal
 _first
 _in_vared
diff --git a/Completion/Zsh/Context/_dynamic_directory_name b/Completion/Zsh/Context/_dynamic_directory_name
new file mode 100644
index 000000000..85f8ff2ee
--- /dev/null
+++ b/Completion/Zsh/Context/_dynamic_directory_name
@@ -0,0 +1,7 @@
+#autoload
+
+# The core libraries don't check for dynamic directory name expansion;
+# this gets called from _subscript.  This is a placeholder for
+# people to overload.
+
+_message 'dynamic directory name: redefine _dynamic_directory_name to use'
diff --git a/Completion/Zsh/Context/_subscript b/Completion/Zsh/Context/_subscript
index 0b23c1cac..cef0a46e5 100644
--- a/Completion/Zsh/Context/_subscript
+++ b/Completion/Zsh/Context/_subscript
@@ -10,7 +10,16 @@ fi
 
 compset -P '\(([^\(\)]|\(*\))##\)' # remove subscript flags
 
-if [[ "$PREFIX" = :* ]]; then
+# Look for a dynamic name expansion.  Completion only gives us
+# the stuff inside the square brackets; we need to find out what's
+# outside.  We ought to check for quoting, really, but given we've
+# got to the subscript code " ~[" is pretty likely to be a dynamic
+# name expansion.
+integer pos=$((CURSOR+1))
+while [[ pos > 1 && $BUFFER[pos-1] != '[' ]]; do (( pos-- )); done
+if [[ $BUFFER[1,pos] = *[[:space:]]##\~\[ ]]; then
+  _dynamic_directory_name
+elif [[ "$PREFIX" = :* ]]; then
   _wanted characters expl 'character class' \
       compadd -p: -S ':]' alnum alpha ascii blank cntrl digit graph \
                           lower print punct space upper xdigit