new options --include --exclude.

* djgpp/config.bat : Fix for 4dos.com.
* m4/dosfile.m4 (HAVE_DOS_FILE_CONTENTS) : Was not set.
Bugs noted and patched by Juan Manuel Guerrero.
A much requested feature, the possibility to select
files when doing recurse :
# find . -name "*.c" | xargs grep main {}
# grep --include=*.c main .
# find . -not -name "*.c" | xargs grep main {}
# grep --exclude=*.c main .
* src/grep.c (short_options): -R equivalent to -r.
(#ifdef) : Fix some inconsistencies in the use of #ifdefs, prefer
#if defined() wen possible.
(long_options) : Add --color, --include and exclude.
(Usage) : Description of new options.
(color) : Rename color variable to color_option.
Removed 'always|never|auto' arguments, not necessary for grep.
(exclude_pattern) : new variable, holder for the file pattern.
(include_pattern) : new variable, hoder for the file pattern.
* src/savedir.c : Signature change, take two new argmuments.
* doc/grep.texi : Document, new options.
* doc/grep.man : Document, new options.

1 files changed, 8 insertions, 2 deletions

diff --git a/NEWS b/NEWS
index 2be374d5..4543090d 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,9 @@
+  - The new option --include=PATTERN will only search matching files
+    when recursing in directories and --exclude=PATTERN, will skip them.
+
+  - The new option --color will use the environment variable GREP_COLOR
+    (default is red) to highlight the matching string.
+
   - The following changes are for POSIX.2 conformance:
 
     . The -q or --quiet or --silent option now causes grep to exit
@@ -21,8 +27,8 @@
   - The new -P or --perl-regexp option tells grep to interpert the pattern as
     a Perl regular expression.
 
-  - The new option --max-count=num makes grep stop reading
-    a file after num matching lines.
+  - The new option --max-count=num makes grep stop reading a file after num
+    matching lines.
     New option -m; equivalent to --max-count.
 
 Version 2.4.2