reverting docs and test

programs/README.md

@@ -272,19 +272,6 @@ It's used the same way as normal `grep`, for example :
 `zstdgrep pattern file.zst`
 
 `zstdgrep` is _not_ compatible with dictionary compression.
-`zstdgrep` does not support the following grep options
-
-```
---dereference-recursive (-R)
-    --directories (-d)
-    --exclude
-    --exclude-from
-    --exclude-dir
-    --include
-    --null (-Z),
-    --null-data (-z)
-    --recursive (-r)
-```
 
 To search into a file compressed with a dictionary,
 it's necessary to decompress it using `zstd` or `zstdcat`,

tests/playTests.sh

@@ -254,30 +254,6 @@ ZCAT=./zstdcat $ZSTDGREP 2>&1 "1234" tmp_grep_bad.zst && die "Should have failed
 ZCAT=./zstdcat $ZSTDGREP 2>&1 "1234" tmp_grep_bad.zst | grep "No such file or directory" || true
 rm -f tmp_grep*
 
-println "\n===> zstdgrep --regexp= multiple"
-echo "start" > tmp_grep
-echo "stop" >> tmp_grep
-ZCAT=./zstdcat $ZSTDGREP --regexp=start --regexp=stop tmp_grep > tmp_grep_out1
-grep -e start -e stop tmp_grep > tmp_grep_out2
-$DIFF tmp_grep_out1 tmp_grep_out2
-rm -f tmp_grep*
-
-println "\n===> zstdgrep multiple -e"
-echo "start" > tmp_grep
-echo "stop" >> tmp_grep
-ZCAT=./zstdcat $ZSTDGREP -e start -e stop tmp_grep > tmp_grep_out1
-grep -e start -e stop tmp_grep > tmp_grep_out2
-$DIFF tmp_grep_out1 tmp_grep_out2
-rm -f tmp_grep*
-
-println "\n===> zstdgrep multiple --regexp"
-echo "start" > tmp_grep
-echo "stop" >> tmp_grep
-ZCAT=./zstdcat $ZSTDGREP --regexp start --regexp stop tmp_grep > tmp_grep_out1
-grep -e start -e stop tmp_grep > tmp_grep_out2
-$DIFF tmp_grep_out1 tmp_grep_out2
-rm -f tmp_grep*
-
 println "\n===>  --exclude-compressed flag"
 rm -rf precompressedFilterTestDir
 mkdir -p precompressedFilterTestDir