format-patch: make rfc2047 encoding more strict

diff --git a/git-compat-util.h b/git-compat-util.h
index 5bd9ad7d2a23773b1410ded9f4f241ebe4d4da00..f011a8d7bb9fc61b0bd840ea954257f505bd62d5 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -466,6 +466,7 @@ extern const char tolower_trans_tbl[256];
 #undef isdigit
 #undef isalpha
 #undef isalnum
+#undef isprint
 #undef islower
 #undef isupper
 #undef tolower
@@ -483,6 +484,7 @@ extern unsigned char sane_ctype[256];
 #define isdigit(x) sane_istest(x,GIT_DIGIT)
 #define isalpha(x) sane_istest(x,GIT_ALPHA)
 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
+#define isprint(x) ((x) >= 0x20 && (x) <= 0x7e)
 #define islower(x) sane_iscase(x, 1)
 #define isupper(x) sane_iscase(x, 0)
 #define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)