Merge branch 'jc/quote'

* jc/quote:
  Add core.quotepath configuration variable.

Documentation/config.txt

@@ -117,6 +117,18 @@ core.fileMode::
 	the working copy are ignored; useful on broken filesystems like FAT.
 	See gitlink:git-update-index[1]. True by default.
 
+core.quotepath::
+	The commands that output paths (e.g. `ls-files`,
+	`diff`), when not given the `-z` option, will quote
+	"unusual" characters in the pathname by enclosing the
+	pathname in a double-quote pair and with backslashes the
+	same way strings in C source code are quoted.  If this
+	variable is set to false, the bytes higher than 0x80 are
+	not quoted but output as verbatim.  Note that double
+	quote, backslash and control characters are always
+	quoted without `-z` regardless of the setting of this
+	variable.
+
 core.autocrlf::
 	If true, makes git convert `CRLF` at the end of lines in text files to
 	`LF` when reading from the filesystem, and convert in reverse when

cache.h

@@ -294,6 +294,7 @@ extern int delete_ref(const char *, const unsigned char *sha1);
 
 /* Environment bits from configuration mechanism */
 extern int trust_executable_bit;
+extern int quote_path_fully;
 extern int has_symlinks;
 extern int assume_unchanged;
 extern int prefer_symlink_refs;

config.c

@@ -271,6 +271,11 @@ int git_default_config(const char *var, const char *value)
 		return 0;
 	}
 
+	if (!strcmp(var, "core.quotepath")) {
+		quote_path_fully = git_config_bool(var, value);
+		return 0;
+	}
+
 	if (!strcmp(var, "core.symlinks")) {
 		has_symlinks = git_config_bool(var, value);
 		return 0;

environment.c

@@ -12,6 +12,7 @@
 char git_default_email[MAX_GITNAME];
 char git_default_name[MAX_GITNAME];
 int trust_executable_bit = 1;
+int quote_path_fully = 1;
 int has_symlinks = 1;
 int assume_unchanged;
 int prefer_symlink_refs;

quote.c

@@ -188,7 +188,8 @@ static int quote_c_style_counted(const char *name, int namelen,
 #define EMITQ() EMIT('\\')
 
 	const char *sp;
-	int ch, count = 0, needquote = 0;
+	unsigned char ch;
+	int count = 0, needquote = 0;
 
 	if (!no_dq)
 		EMIT('"');
@@ -197,7 +198,7 @@ static int quote_c_style_counted(const char *name, int namelen,
 		if (!ch)
 			break;
 		if ((ch < ' ') || (ch == '"') || (ch == '\\') ||
-		    (ch >= 0177)) {
+		    (quote_path_fully && (ch >= 0177))) {
 			needquote = 1;
 			switch (ch) {
 			case '\a': EMITQ(); ch = 'a'; break;

t/t3902-quoted.sh

@@ -0,0 +1,126 @@
+#!/bin/sh
+#
+# Copyright (c) 2006 Junio C Hamano
+#
+
+test_description='quoted output'
+
+. ./test-lib.sh
+
+FN='濱野'
+GN='純'
+HT='	'
+LF='
+'
+DQ='"'
+
+for_each_name () {
+	for name in \
+	    Name "Name and a${LF}LF" "Name and an${HT}HT" "Name${DQ}" \
+	    "$FN$HT$GN" "$FN$LF$GN" "$FN $GN" "$FN$GN" "$FN$DQ$GN" \
+	    "With SP in it"
+	do
+		eval "$1"
+	done
+}
+
+test_expect_success setup '
+
+	for_each_name "echo initial >\"\$name\""
+	git add . &&
+	git commit -q -m Initial &&
+
+	for_each_name "echo second >\"\$name\"" &&
+	git commit -a -m Second
+
+	for_each_name "echo modified >\"\$name\""
+
+'
+
+cat >expect.quoted <<\EOF
+Name
+"Name and a\nLF"
+"Name and an\tHT"
+"Name\""
+With SP in it
+"\346\277\261\351\207\216\t\347\264\224"
+"\346\277\261\351\207\216\n\347\264\224"
+"\346\277\261\351\207\216 \347\264\224"
+"\346\277\261\351\207\216\"\347\264\224"
+"\346\277\261\351\207\216\347\264\224"
+EOF
+
+cat >expect.raw <<\EOF
+Name
+"Name and a\nLF"
+"Name and an\tHT"
+"Name\""
+With SP in it
+"濱野\t純"
+"濱野\n純"
+濱野 純
+"濱野\"純"
+濱野純
+EOF
+
+test_expect_success 'check fully quoted output from ls-files' '
+
+	git ls-files >current && diff -u expect.quoted current
+
+'
+
+test_expect_success 'check fully quoted output from diff-files' '
+
+	git diff --name-only >current &&
+	diff -u expect.quoted current
+
+'
+
+test_expect_success 'check fully quoted output from diff-index' '
+
+	git diff --name-only HEAD >current &&
+	diff -u expect.quoted current
+
+'
+
+test_expect_success 'check fully quoted output from diff-tree' '
+
+	git diff --name-only HEAD^ HEAD >current &&
+	diff -u expect.quoted current
+
+'
+
+test_expect_success 'setting core.quotepath' '
+
+	git config --bool core.quotepath false
+
+'
+
+test_expect_success 'check fully quoted output from ls-files' '
+
+	git ls-files >current && diff -u expect.raw current
+
+'
+
+test_expect_success 'check fully quoted output from diff-files' '
+
+	git diff --name-only >current &&
+	diff -u expect.raw current
+
+'
+
+test_expect_success 'check fully quoted output from diff-index' '
+
+	git diff --name-only HEAD >current &&
+	diff -u expect.raw current
+
+'
+
+test_expect_success 'check fully quoted output from diff-tree' '
+
+	git diff --name-only HEAD^ HEAD >current &&
+	diff -u expect.raw current
+
+'
+
+test_done