p5551: add a script to test fetch pack-dir rescans

diff --git a/grep.c b/grep.c
index 06c4c249266acf5123c2de21a2a68b489e522ca5..c9e7cc735681ed4c670abd7f319336204391173b 100644 (file)
--- a/grep.c
+++ b/grep.c
@@ -1,4 +1,5 @@
 #include "cache.h"
+#include "config.h"
 #include "grep.h"
 #include "userdiff.h"
 #include "xdiff-interface.h"
@@ -34,10 +35,8 @@ void init_grep_defaults(void)
        memset(opt, 0, sizeof(*opt));
        opt->relative = 1;
        opt->pathname = 1;
-       opt->regflags = REG_NEWLINE;
        opt->max_depth = -1;
        opt->pattern_type_option = GREP_PATTERN_TYPE_UNSPECIFIED;
-       opt->extended_regexp_option = 0;
        color_set(opt->color_context, "");
        color_set(opt->color_filename, "");
        color_set(opt->color_function, "");
@@ -78,10 +77,7 @@ int grep_config(const char *var, const char *value, void *cb)
                return -1;
 
        if (!strcmp(var, "grep.extendedregexp")) {
-               if (git_config_bool(var, value))
-                       opt->extended_regexp_option = 1;
-               else
-                       opt->extended_regexp_option = 0;
+               opt->extended_regexp_option = git_config_bool(var, value);
                return 0;
        }
 
@@ -156,7 +152,6 @@ void grep_init(struct grep_opt *opt, const char *prefix)
        opt->linenum = def->linenum;
        opt->max_depth = def->max_depth;
        opt->pathname = def->pathname;
-       opt->regflags = def->regflags;
        opt->relative = def->relative;
        opt->output = def->output;
 
@@ -172,33 +167,41 @@ void grep_init(struct grep_opt *opt, const char *prefix)
 
 static void grep_set_pattern_type_option(enum grep_pattern_type pattern_type, struct grep_opt *opt)
 {
+       /*
+        * When committing to the pattern type by setting the relevant
+        * fields in grep_opt it's generally not necessary to zero out
+        * the fields we're not choosing, since they won't have been
+        * set by anything. The extended_regexp_option field is the
+        * only exception to this.
+        *
+        * This is because in the process of parsing grep.patternType
+        * & grep.extendedRegexp we set opt->pattern_type_option and
+        * opt->extended_regexp_option, respectively. We then
+        * internally use opt->extended_regexp_option to see if we're
+        * compiling an ERE. It must be unset if that's not actually
+        * the case.
+        */
+       if (pattern_type != GREP_PATTERN_TYPE_ERE &&
+           opt->extended_regexp_option)
+               opt->extended_regexp_option = 0;
+
        switch (pattern_type) {
        case GREP_PATTERN_TYPE_UNSPECIFIED:
                /* fall through */
 
        case GREP_PATTERN_TYPE_BRE:
-               opt->fixed = 0;
-               opt->pcre1 = 0;
-               opt->pcre2 = 0;
                break;
 
        case GREP_PATTERN_TYPE_ERE:
-               opt->fixed = 0;
-               opt->pcre1 = 0;
-               opt->pcre2 = 0;
-               opt->regflags |= REG_EXTENDED;
+               opt->extended_regexp_option = 1;
                break;
 
        case GREP_PATTERN_TYPE_FIXED:
                opt->fixed = 1;
-               opt->pcre1 = 0;
-               opt->pcre2 = 0;
                break;
 
        case GREP_PATTERN_TYPE_PCRE:
-               opt->fixed = 0;
 #ifdef USE_LIBPCRE2
-               opt->pcre1 = 0;
                opt->pcre2 = 1;
 #else
                /*
@@ -208,7 +211,6 @@ static void grep_set_pattern_type_option(enum grep_pattern_type pattern_type, st
                 * "cannot use Perl-compatible regexes[...]".
                 */
                opt->pcre1 = 1;
-               opt->pcre2 = 0;
 #endif
                break;
        }
@@ -221,6 +223,11 @@ void grep_commit_pattern_type(enum grep_pattern_type pattern_type, struct grep_o
        else if (opt->pattern_type_option != GREP_PATTERN_TYPE_UNSPECIFIED)
                grep_set_pattern_type_option(opt->pattern_type_option, opt);
        else if (opt->extended_regexp_option)
+               /*
+                * This branch *must* happen after setting from the
+                * opt->pattern_type_option above, we don't want
+                * grep.extendedRegexp to override grep.patternType!
+                */
                grep_set_pattern_type_option(GREP_PATTERN_TYPE_ERE, opt);
 }
 
@@ -586,7 +593,7 @@ static void compile_fixed_regexp(struct grep_pat *p, struct grep_opt *opt)
 {
        struct strbuf sb = STRBUF_INIT;
        int err;
-       int regflags = opt->regflags;
+       int regflags = 0;
 
        basic_regex_quote_buf(&sb, p->pattern);
        if (opt->ignore_case)
@@ -605,12 +612,12 @@ static void compile_fixed_regexp(struct grep_pat *p, struct grep_opt *opt)
 
 static void compile_regexp(struct grep_pat *p, struct grep_opt *opt)
 {
-       int icase, ascii_only;
+       int ascii_only;
        int err;
+       int regflags = REG_NEWLINE;
 
        p->word_regexp = opt->word_regexp;
        p->ignore_case = opt->ignore_case;
-       icase          = opt->regflags & REG_ICASE || p->ignore_case;
        ascii_only     = !has_non_ascii(p->pattern);
 
        /*
@@ -628,12 +635,10 @@ static void compile_regexp(struct grep_pat *p, struct grep_opt *opt)
        if (opt->fixed ||
            has_null(p->pattern, p->patternlen) ||
            is_fixed(p->pattern, p->patternlen))
-               p->fixed = !icase || ascii_only;
-       else
-               p->fixed = 0;
+               p->fixed = !p->ignore_case || ascii_only;
 
        if (p->fixed) {
-               p->kws = kwsalloc(icase ? tolower_trans_tbl : NULL);
+               p->kws = kwsalloc(p->ignore_case ? tolower_trans_tbl : NULL);
                kwsincr(p->kws, p->pattern, p->patternlen);
                kwsprep(p->kws);
                return;
@@ -657,7 +662,11 @@ static void compile_regexp(struct grep_pat *p, struct grep_opt *opt)
                return;
        }
 
-       err = regcomp(&p->regexp, p->pattern, opt->regflags);
+       if (p->ignore_case)
+               regflags |= REG_ICASE;
+       if (opt->extended_regexp_option)
+               regflags |= REG_EXTENDED;
+       err = regcomp(&p->regexp, p->pattern, regflags);
        if (err) {
                char errbuf[1024];
                regerror(err, &p->regexp, errbuf, 1024);
@@ -1812,7 +1821,7 @@ static int grep_source_1(struct grep_opt *opt, struct grep_source *gs, int colle
                return 0;
 
        if (opt->status_only)
-               return 0;
+               return opt->unmatch_name_only;
        if (opt->unmatch_name_only) {
                /* We did not see any hit, so we want to show this */
                show_name(opt, gs->name);
@@ -1939,12 +1948,9 @@ void grep_source_init(struct grep_source *gs, enum grep_source_type type,
 
 void grep_source_clear(struct grep_source *gs)
 {
-       free(gs->name);
-       gs->name = NULL;
-       free(gs->path);
-       gs->path = NULL;
-       free(gs->identifier);
-       gs->identifier = NULL;
+       FREE_AND_NULL(gs->name);
+       FREE_AND_NULL(gs->path);
+       FREE_AND_NULL(gs->identifier);
        grep_source_clear_data(gs);
 }
 
@@ -1954,8 +1960,7 @@ void grep_source_clear_data(struct grep_source *gs)
        case GREP_SOURCE_FILE:
        case GREP_SOURCE_OID:
        case GREP_SOURCE_SUBMODULE:
-               free(gs->buf);
-               gs->buf = NULL;
+               FREE_AND_NULL(gs->buf);
                gs->size = 0;
                break;
        case GREP_SOURCE_BUF: