vis: improve :set option number parsing

Only accept numbers in range [0, INT_MAX]. Reject trailing garbage,
where before something like `:set cc 50NaN` worked it will now cause
an error.

Close #418

1 files changed, 1 insertions, 2 deletions

diff --git a/sam.c b/sam.c
index 2c4fcb6..337f8a4 100644
--- a/sam.c
+++ b/sam.c
@@ -269,7 +269,6 @@ typedef struct {
 		OPTION_TYPE_STRING,
 		OPTION_TYPE_BOOL,
 		OPTION_TYPE_NUMBER,
-		OPTION_TYPE_UNSIGNED,
 	} type;
 	enum {
 		OPTION_FLAG_NONE = 0,
@@ -370,7 +369,7 @@ static const OptionDef options[] = {
 	},
 	[OPTION_HORIZON] = {
 		{ "horizon" },
-		OPTION_TYPE_UNSIGNED, OPTION_FLAG_WINDOW,
+		OPTION_TYPE_NUMBER, OPTION_FLAG_WINDOW,
 		"Number of bytes to consider for syntax highlighting",
 	},
 };