Merge branch 'js/add-p-in-c'

The effort to move "git-add--interactive" to C continues.

* js/add-p-in-c:
  built-in add -p: show helpful hint when nothing can be staged
  built-in add -p: only show the applicable parts of the help text
  built-in add -p: implement the 'q' ("quit") command
  built-in add -p: implement the '/' ("search regex") command
  built-in add -p: implement the 'g' ("goto") command
  built-in add -p: implement hunk editing
  strbuf: add a helper function to call the editor "on an strbuf"
  built-in add -p: coalesce hunks after splitting them
  built-in add -p: implement the hunk splitting feature
  built-in add -p: show different prompts for mode changes and deletions
  built-in app -p: allow selecting a mode change as a "hunk"
  built-in add -p: handle deleted empty files
  built-in add -p: support multi-file diffs
  built-in add -p: offer a helpful error message when hunk navigation failed
  built-in add -p: color the prompt and the help text
  built-in add -p: adjust hunk headers as needed
  built-in add -p: show colored hunks by default
  built-in add -i: wire up the new C code for the `patch` command
  built-in add -i: start implementing the `patch` functionality in C

Makefile

@@ -825,6 +825,7 @@ LIB_H := $(sort $(patsubst ./%,%,$(shell git ls-files '*.h' ':!t/' ':!Documentat
 
 LIB_OBJS += abspath.o
 LIB_OBJS += add-interactive.o
+LIB_OBJS += add-patch.o
 LIB_OBJS += advice.o
 LIB_OBJS += alias.o
 LIB_OBJS += alloc.o

add-interactive.c

@@ -10,16 +10,6 @@
 #include "dir.h"
 #include "run-command.h"
 
-struct add_i_state {
-	struct repository *r;
-	int use_color;
-	char header_color[COLOR_MAXLEN];
-	char help_color[COLOR_MAXLEN];
-	char prompt_color[COLOR_MAXLEN];
-	char error_color[COLOR_MAXLEN];
-	char reset_color[COLOR_MAXLEN];
-};
-
 static void init_color(struct repository *r, struct add_i_state *s,
 		       const char *slot_name, char *dst,
 		       const char *default_color)
@@ -36,7 +26,7 @@ static void init_color(struct repository *r, struct add_i_state *s,
 	free(key);
 }
 
-static void init_add_i_state(struct add_i_state *s, struct repository *r)
+void init_add_i_state(struct add_i_state *s, struct repository *r)
 {
 	const char *value;
 
@@ -54,6 +44,14 @@ static void init_add_i_state(struct add_i_state *s, struct repository *r)
 	init_color(r, s, "prompt", s->prompt_color, GIT_COLOR_BOLD_BLUE);
 	init_color(r, s, "error", s->error_color, GIT_COLOR_BOLD_RED);
 	init_color(r, s, "reset", s->reset_color, GIT_COLOR_RESET);
+	init_color(r, s, "fraginfo", s->fraginfo_color,
+		   diff_get_color(s->use_color, DIFF_FRAGINFO));
+	init_color(r, s, "context", s->context_color,
+		diff_get_color(s->use_color, DIFF_CONTEXT));
+	init_color(r, s, "old", s->file_old_color,
+		diff_get_color(s->use_color, DIFF_FILE_OLD));
+	init_color(r, s, "new", s->file_new_color,
+		diff_get_color(s->use_color, DIFF_FILE_NEW));
 }
 
 /*
@@ -917,15 +915,18 @@ static int run_patch(struct add_i_state *s, const struct pathspec *ps,
 	count = list_and_choose(s, files, opts);
 	if (count >= 0) {
 		struct argv_array args = ARGV_ARRAY_INIT;
+		struct pathspec ps_selected = { 0 };
 
-		argv_array_pushl(&args, "git", "add--interactive", "--patch",
-				 "--", NULL);
 		for (i = 0; i < files->items.nr; i++)
 			if (files->selected[i])
 				argv_array_push(&args,
 						files->items.items[i].string);
-		res = run_command_v_opt(args.argv, 0);
+		parse_pathspec(&ps_selected,
+			       PATHSPEC_ALL_MAGIC & ~PATHSPEC_LITERAL,
+			       PATHSPEC_LITERAL_PATH, "", args.argv);
+		res = run_add_p(s->r, &ps_selected);
 		argv_array_clear(&args);
+		clear_pathspec(&ps_selected);
 	}
 
 	return res;

add-interactive.h

@@ -1,8 +1,27 @@
 #ifndef ADD_INTERACTIVE_H
 #define ADD_INTERACTIVE_H
 
+#include "color.h"
+
+struct add_i_state {
+	struct repository *r;
+	int use_color;
+	char header_color[COLOR_MAXLEN];
+	char help_color[COLOR_MAXLEN];
+	char prompt_color[COLOR_MAXLEN];
+	char error_color[COLOR_MAXLEN];
+	char reset_color[COLOR_MAXLEN];
+	char fraginfo_color[COLOR_MAXLEN];
+	char context_color[COLOR_MAXLEN];
+	char file_old_color[COLOR_MAXLEN];
+	char file_new_color[COLOR_MAXLEN];
+};
+
+void init_add_i_state(struct add_i_state *s, struct repository *r);
+
 struct repository;
 struct pathspec;
 int run_add_i(struct repository *r, const struct pathspec *ps);
+int run_add_p(struct repository *r, const struct pathspec *ps);
 
 #endif