From b62ee2e2fbaccbbba7501115819e7d10eefe38d5 Mon Sep 17 00:00:00 2001
From: Jackson Ray Hamilton <address@hidden>
Date: Mon, 19 Dec 2016 21:44:18 -0800
Subject: [PATCH 2/2] Optimize exclusion further with case.

TBH, I'm not nearly as confident in this code as the code it replaces, but it is
slightly faster.
---
 GNUmakefile | 27 ++++++++++++++++-----------
 1 file changed, 16 insertions(+), 11 deletions(-)

diff --git a/GNUmakefile b/GNUmakefile
index 9690af4..442dd9c 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -148,17 +148,22 @@ $(foreach al, $(autoloads), $(eval $(call RULE-srcdeps, $(al))))
 # the -autoloads.el, the .el files that are marked "no-byte-compile", and
 # files matching patterns in packages' .elpaignore files.
 included_els := $(shell \
-  for pt in packages/*; do				\
-      if [ -f "$${pt}/.elpaignore" ]; then		\
-          ignore="$${pt}/.elpaignore";			\
-      else						\
-          ignore="/dev/null";				\
-      fi;						\
-      if [ -d $$pt ]; then				\
-          tar -ch $$pt/*.el --no-recursion		\
-              --exclude-vcs -X "$$ignore"		\
-            | tar --list;				\
-      fi;						\
+  for pt in packages/*; do						\
+      if [ -d $$pt ]; then						\
+          if [ -f "$${pt}/.elpaignore" ]; then				\
+              cd $$pt;							\
+              ls -1 *.el | while IFS= read -r filename; do		\
+                  hasmatch=0;						\
+                  while IFS= read -r pattern; do			\
+                      case $$filename in ($$pattern) hasmatch=1; break ;; esac;\
+                  done < .elpaignore;					\
+                  test $$hasmatch = 1 || echo "$${pt}/$${filename}";	\
+              done;							\
+              cd ../..;							\
+          else								\
+              ls -1 $$pt/*.el;						\
+          fi;								\
+      fi;								\
   done)
 els := $(call FILTER-nonsrc, $(included_els))
 naive_elcs := $(patsubst %.el, %.elc, $(els))
-- 
2.1.4