revert(3p/git): Revert merge of git upstream at v2.26.2 r/852

This causes cgit to serve error pages, which is undesirable.

This reverts commit 5229c9b232de5bfa959ad6ebbb4c8192ac513352, reversing
changes made to f2b211131f2347342dde63975b09cf603149f1a3.

1 files changed, 34 insertions, 6 deletions

diff --git a/third_party/git/grep.h b/third_party/git/grep.h
index 9115db851505..1875880f3799 100644
--- a/third_party/git/grep.h
+++ b/third_party/git/grep.h
@@ -3,12 +3,24 @@
 #include "color.h"
 #ifdef USE_LIBPCRE1
 #include <pcre.h>
-#ifndef PCRE_NO_UTF8_CHECK
-#define PCRE_NO_UTF8_CHECK 0
+#ifdef PCRE_CONFIG_JIT
+#if PCRE_MAJOR >= 8 && PCRE_MINOR >= 32
+#ifndef NO_LIBPCRE1_JIT
+#define GIT_PCRE1_USE_JIT
+#define GIT_PCRE_STUDY_JIT_COMPILE PCRE_STUDY_JIT_COMPILE
+#endif
+#endif
+#endif
+#ifndef GIT_PCRE_STUDY_JIT_COMPILE
+#define GIT_PCRE_STUDY_JIT_COMPILE 0
+#endif
+#if PCRE_MAJOR <= 8 && PCRE_MINOR < 20
+typedef int pcre_jit_stack;
 #endif
 #else
 typedef int pcre;
 typedef int pcre_extra;
+typedef int pcre_jit_stack;
 #endif
 #ifdef USE_LIBPCRE2
 #define PCRE2_CODE_UNIT_WIDTH 8
@@ -17,7 +29,10 @@ typedef int pcre_extra;
 typedef int pcre2_code;
 typedef int pcre2_match_data;
 typedef int pcre2_compile_context;
+typedef int pcre2_match_context;
+typedef int pcre2_jit_stack;
 #endif
+#include "kwset.h"
 #include "thread-utils.h"
 #include "userdiff.h"
 
@@ -73,15 +88,17 @@ struct grep_pat {
 	regex_t regexp;
 	pcre *pcre1_regexp;
 	pcre_extra *pcre1_extra_info;
+	pcre_jit_stack *pcre1_jit_stack;
 	const unsigned char *pcre1_tables;
 	int pcre1_jit_on;
 	pcre2_code *pcre2_pattern;
 	pcre2_match_data *pcre2_match_data;
 	pcre2_compile_context *pcre2_compile_context;
-	const uint8_t *pcre2_tables;
+	pcre2_match_context *pcre2_match_context;
+	pcre2_jit_stack *pcre2_jit_stack;
 	uint32_t pcre2_jit_on;
+	kwset_t kws;
 	unsigned fixed:1;
-	unsigned is_fixed:1;
 	unsigned ignore_case:1;
 	unsigned word_regexp:1;
 };
@@ -156,7 +173,6 @@ struct grep_opt {
 	int funcbody;
 	int extended_regexp_option;
 	int pattern_type_option;
-	int ignore_locale;
 	char colors[NR_GREP_COLORS][COLOR_MAXLEN];
 	unsigned pre_context;
 	unsigned post_context;
@@ -173,7 +189,6 @@ struct grep_opt {
 void init_grep_defaults(struct repository *);
 int grep_config(const char *var, const char *value, void *);
 void grep_init(struct grep_opt *, struct repository *repo, const char *prefix);
-void grep_destroy(void);
 void grep_commit_pattern_type(enum grep_pattern_type, struct grep_opt *opt);
 
 void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, const char *origin, int no, enum grep_pat_token t);
@@ -220,5 +235,18 @@ int grep_threads_ok(const struct grep_opt *opt);
  */
 extern int grep_use_locks;
 extern pthread_mutex_t grep_attr_mutex;
+extern pthread_mutex_t grep_read_mutex;
+
+static inline void grep_read_lock(void)
+{
+	if (grep_use_locks)
+		pthread_mutex_lock(&grep_read_mutex);
+}
+
+static inline void grep_read_unlock(void)
+{
+	if (grep_use_locks)
+		pthread_mutex_unlock(&grep_read_mutex);
+}
 
 #endif