bin/stdc, stdc.1: Use the exit status like in grep(1)

Signed-off-by: Alejandro Colomar <alx@kernel.org>

2 files changed, 11 insertions, 1 deletions

diff --git a/bin/stdc b/bin/stdc
index 54db0d7..a57fab6 100755
--- a/bin/stdc
+++ b/bin/stdc
@@ -9,7 +9,7 @@ docdir="$datarootdir/doc";
 err()
 {
 	>&2 echo "$(basename "$0"): error: $*";
-	exit 1;
+	exit 2;
 }
 
 grep_proto()
diff --git a/share/man/man1/stdc.1 b/share/man/man1/stdc.1
index 7fde342..c134f45 100644
--- a/share/man/man1/stdc.1
+++ b/share/man/man1/stdc.1
@@ -30,6 +30,16 @@ Name of the function to be searched.
 It is a
 .MR PCRE2 3
 pattern.
+.SH Exit status
+.TP
+0
+At least a matching declaration was found.
+.TP
+1
+No matching declarations were found.
+.TP
+2
+An error occured.
 .SH Examples
 .EX
 .RB "$ " "stdc c11 \[aq]mem[[:alpha:]]*\[aq]"