grep: teach --debug option to dump the parse tree

diff --git a/grep.h b/grep.h
index 36e49d8255e2952828f367a0e35d4fcb027d9772..bf5be5ada4bc84a814cf0fe41b613bebd6ac7ce4 100644 (file)
--- a/grep.h
+++ b/grep.h
@@ -38,7 +38,7 @@ struct grep_pat {
        const char *origin;
        int no;
        enum grep_pat_token token;
-       const char *pattern;
+       char *pattern;
        size_t patternlen;
        enum grep_header_field field;
        regex_t regexp;
@@ -90,6 +90,7 @@ struct grep_opt {
        int word_regexp;
        int fixed;
        int all_match;
+       int debug;
 #define GREP_BINARY_DEFAULT    0
 #define GREP_BINARY_NOMATCH    1
 #define GREP_BINARY_TEXT       2