Allow usagestr to be NULL and don't display anything a help screen in
this case. This is useful to implement incremental parsers.
Signed-off-by: Rene Scharfe <rene.scharfe@xxxxxxxxxxxxxx>
---
parse-options.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/parse-options.c b/parse-options.c
index 8b21dea..51e804b 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -364,6 +364,9 @@ int parse_options(int argc, const char **argv, const struct option *options,
int usage_with_options_internal(const char * const *usagestr,
const struct option *opts, int full)
{
+ if (!usagestr)
+ return PARSE_OPT_HELP;
+
fprintf(stderr, "usage: %s\n", *usagestr++);
while (*usagestr && **usagestr)
fprintf(stderr, " or: %s\n", *usagestr++);
--
1.6.2
--
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