rm push/pop

package.cm

@@ -198,7 +198,7 @@ package.find_packages = function(dir) {
   var list = fd.readdir(dir)
   if (!list) return found
   if (fd.is_file(dir + '/cell.toml'))
-    push(found, dir)
+    found[] = dir
   arrfor(list, function(item) {
     if (item == '.' || item == '..' || item == '.cell' || item == '.git') return
     var full = dir + '/' + item
@@ -207,7 +207,7 @@ package.find_packages = function(dir) {
     if (st && st.isDirectory) {
       sub = package.find_packages(full)
       arrfor(sub, function(p) {
-        push(found, p)
+        found[] = p
       })
     }
   })
@@ -227,14 +227,14 @@ package.list_modules = function(name) {
   var stem = null
   for (i = 0; i < length(files); i++) {
     if (ends_with(files[i], '.cm')) {
-      push(modules, text(files[i], 0, -3))
+      modules[] = text(files[i], 0, -3)
     }
   }
   var c_files = package.get_c_files(name, null, true)
   for (i = 0; i < length(c_files); i++) {
     stem = ends_with(c_files[i], '.cpp') ? text(c_files[i], 0, -4) : text(c_files[i], 0, -2)
     if (find(modules, function(m) { return m == stem }) == null)
-      push(modules, stem)
+      modules[] = stem
   }
   return modules
 }
@@ -245,7 +245,7 @@ package.list_programs = function(name) {
   var i = 0
   for (i = 0; i < length(files); i++) {
     if (ends_with(files[i], '.ce')) {
-      push(programs, text(files[i], 0, -3))
+      programs[] = text(files[i], 0, -3)
     }
   }
   return programs
@@ -360,7 +360,7 @@ package.get_c_files = function(name, target, exclude_main) {
         basename = fd.basename(selected)
         if (basename == 'main.c' || starts_with(basename, 'main_')) return
       }
-      push(result, selected)
+      result[] = selected
     }
   })