aboutsummaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/nvim/macros.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/nvim/macros.h b/src/nvim/macros.h
index 93812683d6..e14e998e7a 100644
--- a/src/nvim/macros.h
+++ b/src/nvim/macros.h
@@ -59,12 +59,12 @@
/* Use our own isdigit() replacement, because on MS-Windows isdigit() returns
* non-zero for superscript 1. Also avoids that isdigit() crashes for numbers
* below 0 and above 255. */
-#define VIM_ISDIGIT(c) ((unsigned)(c) - '0' < 10)
+#define VIM_ISDIGIT(c) ((unsigned)(c) >= '0' && (unsigned)(c) <= '9')
/* Like isalpha() but reject non-ASCII characters. Can't be used with a
* special key (negative value). */
-# define ASCII_ISLOWER(c) ((unsigned)(c) - 'a' < 26)
-# define ASCII_ISUPPER(c) ((unsigned)(c) - 'A' < 26)
+# define ASCII_ISLOWER(c) ((unsigned)(c) >= 'a' && (unsigned)(c) <= 'z')
+# define ASCII_ISUPPER(c) ((unsigned)(c) >= 'A' && (unsigned)(c) <= 'Z')
# define ASCII_ISALPHA(c) (ASCII_ISUPPER(c) || ASCII_ISLOWER(c))
# define ASCII_ISALNUM(c) (ASCII_ISALPHA(c) || VIM_ISDIGIT(c))