Basic implementation of extended glob.

Several tests in spec/extended-glob.test.sh now pass.

TODO: We might want to allow it only within [[ and case (fnmatch), but
not file system globbing.

Progress with bash_completion: now running into associative array
problem.

core/word_eval.py

@@ -772,10 +772,12 @@ def _EvalWordPart(self, part, part_vals, quoted=False):
       part_vals.append(v)
 
     elif part.tag == word_part_e.ExtGlobPart:
-      e_die('Unxpected extglob', part=part)
-      #log('part %s', part)
-      #v = runtime.StringPartValue('TODO', False)
-      #part_vals.append(v)
+      part_vals.append(runtime.StringPartValue(part.op.val, False))
+      for i, w in enumerate(part.arms):
+        if i != 0:
+          part_vals.append(runtime.StringPartValue('|', False))  # separator
+        self._EvalWordToParts(w, True, part_vals)  # eval like quoted
+      part_vals.append(runtime.StringPartValue(')', False))  # closing )
 
     else:
       raise AssertionError(part.__class__.__name__)

native/libc.c

@@ -7,6 +7,10 @@
 #include <limits.h>
 #include <stdlib.h>
 
+// Enable GNU extensions in fnmatch.h.
+// TODO: Need a configure option for this.
+#define _GNU_SOURCE 1
+
 #include <fnmatch.h>
 #include <glob.h>
 #ifdef __FreeBSD__
@@ -55,7 +59,12 @@ func_fnmatch(PyObject *self, PyObject *args) {
     return NULL;
   }
 
+#ifdef _GNU_SOURCE
+  int flags = FNM_EXTMATCH;
+#else
   int flags = 0;
+#endif
+
   int ret = fnmatch(pattern, str, flags);
 
   switch (ret) {

scripts/complete.sh

@@ -61,4 +61,10 @@ git-demo() {
   env -i OSH_CRASH_DUMP_DIR=_tmp bin/osh
 }
 
+bash-completion() {
+  # This is a patched version
+  env -i OSH_CRASH_DUMP_DIR=_tmp bin/osh \
+    /usr/share/bash-completion/bash_completion.osh
+}
+
 "$@"