return 0;
}
+static int is_rfc822_special(char ch)
+{
+ switch (ch) {
+ case '(':
+ case ')':
+ case '<':
+ case '>':
+ case '[':
+ case ']':
+ case ':':
+ case ';':
+ case '@':
+ case ',':
+ case '.':
+ case '"':
+ case '\\':
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static int has_rfc822_specials(const char *s, int len)
+{
+ int i;
+ for (i = 0; i < len; i++)
+ if (is_rfc822_special(s[i]))
+ return 1;
+ return 0;
+}
+
+static void add_rfc822_quoted(struct strbuf *out, const char *s, int len)
+{
+ int i;
+
+ /* just a guess, we may have to also backslash-quote */
+ strbuf_grow(out, len + 2);
+
+ strbuf_addch(out, '"');
+ for (i = 0; i < len; i++) {
+ switch (s[i]) {
+ case '"':
+ case '\\':
+ strbuf_addch(out, '\\');
+ /* fall through */
+ default:
+ strbuf_addch(out, s[i]);
+ }
+ }
+ strbuf_addch(out, '"');
+}
+
static int is_rfc2047_special(char ch)
{
return (non_ascii(ch) || (ch == '=') || (ch == '?') || (ch == '_'));
name_tail--;
display_name_length = name_tail - line;
strbuf_addstr(sb, "From: ");
- add_rfc2047(sb, line, display_name_length, encoding);
+ if (!has_rfc822_specials(line, display_name_length)) {
+ add_rfc2047(sb, line, display_name_length, encoding);
+ } else {
+ struct strbuf quoted = STRBUF_INIT;
+ add_rfc822_quoted("ed, line, display_name_length);
+ add_rfc2047(sb, quoted.buf, quoted.len, encoding);
+ strbuf_release("ed);
+ }
strbuf_add(sb, name_tail, namelen - display_name_length);
strbuf_addch(sb, '\n');
} else {
test_cmp expect subject
'
+check_author() {
+ echo content >>file &&
+ git add file &&
+ GIT_AUTHOR_NAME=$1 git commit -m author-check &&
+ git format-patch --stdout -1 >patch &&
+ grep ^From: patch >actual &&
+ test_cmp expect actual
+}
+
+cat >expect <<'EOF'
+From: "Foo B. Bar" <author@example.com>
+EOF
+test_expect_success 'format-patch quotes dot in headers' '
+ check_author "Foo B. Bar"
+'
+
+cat >expect <<'EOF'
+From: "Foo \"The Baz\" Bar" <author@example.com>
+EOF
+test_expect_success 'format-patch quotes double-quote in headers' '
+ check_author "Foo \"The Baz\" Bar"
+'
+
+cat >expect <<'EOF'
+From: =?UTF-8?q?"F=C3=B6o=20B.=20Bar"?= <author@example.com>
+EOF
+test_expect_success 'rfc2047-encoded headers also double-quote 822 specials' '
+ check_author "Föo B. Bar"
+'
+
+cat >expect <<'EOF'
+Subject: header with . in it
+EOF
+test_expect_success 'subject lines do not have 822 atom-quoting' '
+ echo content >>file &&
+ git add file &&
+ git commit -m "header with . in it" &&
+ git format-patch -k -1 --stdout >patch &&
+ grep ^Subject: patch >actual &&
+ test_cmp expect actual
+'
+
test_done