4 files changed, 12 insertions, 9 deletions
diff --git a/bftw.h b/bftw.h
index 253c346..77148f1 100644
--- a/bftw.h
+++ b/bftw.h
@@ -92,6 +92,9 @@ struct BFTW {
 	int at_flags;
 };
 
+/**
+ * Walk actions returned by the bftw() callback.
+ */
 enum bftw_action {
 	/** Keep walking. */
 	BFTW_CONTINUE,
diff --git a/cmdline.h b/cmdline.h
index e9731f9..b8d22d8 100644
--- a/cmdline.h
+++ b/cmdline.h
@@ -14,8 +14,8 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.           *
  ****************************************************************************/
 
-#ifndef CMDLINE_H
-#define CMDLINE_H
+#ifndef BFS_CMDLINE_H
+#define BFS_CMDLINE_H
 
 #include "color.h"
 
@@ -129,4 +129,4 @@ int eval_cmdline(const struct cmdline *cmdline);
  */
 int free_cmdline(struct cmdline *cmdline);
 
-#endif // CMDLINE_H
+#endif // BFS_CMDLINE_H
diff --git a/eval.h b/eval.h
index f190703..5bf1682 100644
--- a/eval.h
+++ b/eval.h
@@ -14,8 +14,8 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.           *
  ****************************************************************************/
 
-#ifndef EVAL_H
-#define EVAL_H
+#ifndef BFS_EVAL_H
+#define BFS_EVAL_H
 
 #include "expr.h"
 
@@ -70,4 +70,4 @@ bool eval_and(const struct expr *expr, struct eval_state *state);
 bool eval_or(const struct expr *expr, struct eval_state *state);
 bool eval_comma(const struct expr *expr, struct eval_state *state);
 
-#endif // EVAL_H
+#endif // BFS_EVAL_H
diff --git a/expr.h b/expr.h
index 0cd08ce..5eff72f 100644
--- a/expr.h
+++ b/expr.h
@@ -14,8 +14,8 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.           *
  ****************************************************************************/
 
-#ifndef EXPR_H
-#define EXPR_H
+#ifndef BFS_EXPR_H
+#define BFS_EXPR_H
 
 #include "color.h"
 #include "exec.h"
@@ -229,4 +229,4 @@ void dump_expr(CFILE *cfile, const struct expr *expr, bool verbose);
  */
 void free_expr(struct expr *expr);
 
-#endif // EXPR_H
+#endif // BFS_EXPR_H