git: add --info-path and --man-path options

Similar to the way the --html-path option lets UI programs learn where git
has its HTML documentation pages, expose the other two paths used to store
the documentation pages of these two types.

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git.txt

@@ -9,7 +9,7 @@ git - the stupid content tracker
 SYNOPSIS
 --------
 [verse]
-'git' [--version] [--exec-path[=<path>]] [--html-path]
+'git' [--version] [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
     [-p|--paginate|--no-pager] [--no-replace-objects]
     [--bare] [--git-dir=<path>] [--work-tree=<path>]
     [-c <name>=<value>]
@@ -290,6 +290,14 @@ help ...`.
 	Print the path to wherever your git HTML documentation is installed
 	and exit.
 
+--man-path::
+	Print the path to wherever your git man pages are installed
+	and exit.
+
+--info-path::
+	Print the path to wherever your git Info files are installed
+	and exit.
+
 -p::
 --paginate::
 	Pipe all output into 'less' (or if set, $PAGER) if standard

Makefile

@@ -1676,7 +1676,9 @@ strip: $(PROGRAMS) git$X
 
 git.o: common-cmds.h
 git.s git.o: EXTRA_CPPFLAGS = -DGIT_VERSION='"$(GIT_VERSION)"' \
-	'-DGIT_HTML_PATH="$(htmldir_SQ)"'
+	'-DGIT_HTML_PATH="$(htmldir_SQ)"' \
+	'-DGIT_MAN_PATH="$(mandir_SQ)"' \
+	'-DGIT_INFO_PATH="$(infodir_SQ)"'
 
 git$X: git.o $(BUILTIN_OBJS) $(GITLIBS)
 	$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ git.o \

git.c

@@ -6,7 +6,7 @@
 #include "run-command.h"
 
 const char git_usage_string[] =
-	"git [--version] [--exec-path[=<path>]] [--html-path]\n"
+	"git [--version] [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]\n"
 	"           [-p|--paginate|--no-pager] [--no-replace-objects]\n"
 	"           [--bare] [--git-dir=<path>] [--work-tree=<path>]\n"
 	"           [-c name=value] [--help]\n"
@@ -95,6 +95,12 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
 		} else if (!strcmp(cmd, "--html-path")) {
 			puts(system_path(GIT_HTML_PATH));
 			exit(0);
+		} else if (!strcmp(cmd, "--man-path")) {
+			puts(system_path(GIT_MAN_PATH));
+			exit(0);
+		} else if (!strcmp(cmd, "--info-path")) {
+			puts(system_path(GIT_INFO_PATH));
+			exit(0);
 		} else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) {
 			use_pager = 1;
 		} else if (!strcmp(cmd, "--no-pager")) {