[PATCH v4 1/6] version: replace manual ASCII checks with isprint() for clarity

[Usman Akinyemi <usmanakinyemi202@gmail.com>]

Since the isprint() function checks for printable characters, let's
replace the existing hardcoded ASCII checks with it. However, since
the original checks also handled spaces, we need to account for spaces
explicitly in the new check.

Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
---
 version.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/version.c b/version.c
index 4d763ab48d..6cfbb8ca56 100644
--- a/version.c
+++ b/version.c
@@ -2,6 +2,7 @@
 #include "version.h"
 #include "version-def.h"
 #include "strbuf.h"
+#include "sane-ctype.h"
 
 const char git_version_string[] = GIT_VERSION;
 const char git_built_from_commit_string[] = GIT_BUILT_FROM_COMMIT;
@@ -29,7 +30,7 @@ const char *git_user_agent_sanitized(void)
 		strbuf_addstr(&buf, git_user_agent());
 		strbuf_trim(&buf);
 		for (size_t i = 0; i < buf.len; i++) {
-			if (buf.buf[i] <= 32 || buf.buf[i] >= 127)
+			if (!isprint(buf.buf[i]) || buf.buf[i] == ' ')
 				buf.buf[i] = '.';
 		}
 		agent = buf.buf;
-- 
2.48.1