Extended regex_replace.c examples.

2 files changed, 10 insertions, 2 deletions

diff --git a/examples/regex_replace.c b/examples/regex_replace.c
index 2383a119..377487cc 100644
--- a/examples/regex_replace.c
+++ b/examples/regex_replace.c
@@ -17,7 +17,7 @@ int main()
     const char* pattern = "\\b(\\d\\d\\d\\d)-(1[0-2]|0[1-9])-(3[01]|[12][0-9]|0[1-9])\\b";
     const char* input = "start date: 2015-12-31, end date: 2022-02-28";
 
-    c_auto (cstr, str1, str2)
+    c_auto (cstr, str1, str2, str3, str4)
     {
         printf("input: %s\n", input);
         /* European date format */
@@ -27,6 +27,14 @@ int main()
         /* US date format, and subtract 20 years: */
         str2 = cregex_replace_ex(input, pattern, "\\1/\\3/\\2", sub_20y, 0, 0);
         printf("us-20: %s\n", cstr_str(&str2));
+
+        /* Wrap first date only inside []: */
+        str3 = cregex_replace_ex(input, pattern, "[\\0]", NULL, 0, 1);
+        printf("brack: %s\n", cstr_str(&str3));
+
+        /* replace with a fixed string: */
+        str4 = cregex_replace(input, pattern, "YYYY-MM-DD");
+        printf("brack: %s\n", cstr_str(&str4));
     }
 }
 
diff --git a/include/stc/cregex.h b/include/stc/cregex.h
index a59a876c..2b972fc8 100644
--- a/include/stc/cregex.h
+++ b/include/stc/cregex.h
@@ -79,7 +79,7 @@ int cregex_compile(cregex *self, const char* pattern, int cflags);
 /* number of capture groups in a regex pattern */
 int cregex_captures(const cregex* self);
 
-/* return number of capture groups on success, or (negative) error code on failure. */
+/* return 1 on match, 0 on nomatch, and -1 on failure. */
 int cregex_match(const cregex *self, const char* string, 
                  unsigned nmatch, csview match[], int mflags);