From 6a5377ac14bec2f2ae62c4ec085ff3b149cc11ad Mon Sep 17 00:00:00 2001
From: Denis Vlasenko <vda.linux@googlemail.com>
Date: Tue, 25 Sep 2007 18:35:28 +0000
Subject: documentation bits in comments, no code changes

---
 editors/ed.c            | 2 --
 include/libbb.h         | 6 ++++++
 libbb/lineedit.c        | 5 +++++
 libbb/skip_whitespace.c | 2 +-
 4 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/editors/ed.c b/editors/ed.c
index f5b9c39bb..cd3836aed 100644
--- a/editors/ed.c
+++ b/editors/ed.c
@@ -82,7 +82,6 @@ static int bad_nums(int num1, int num2, const char *for_what)
 
 static char *skip_blank(const char *cp)
 {
-// NB: fix comment in skip_whitespace!
 	while (isblank(*cp))
 		cp++;
 	return (char *)cp;
@@ -125,7 +124,6 @@ static void doCommands(void)
 	smallint have1, have2;
 
 	while (TRUE) {
-// NB: fix comment in lineedit.c!
 		/* Returns:
 		 * -1 on read errors or EOF, or on bare Ctrl-D.
 		 * 0  on ctrl-C,
diff --git a/include/libbb.h b/include/libbb.h
index 25b2e4489..407b723b2 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -892,6 +892,12 @@ enum {
 	FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION,
 };
 line_input_t *new_line_input_t(int flags);
+/* Returns:
+ * -1 on read errors or EOF, or on bare Ctrl-D.
+ * 0  on ctrl-C,
+ * >0 length of input string, including terminating '\n'
+ * [is this true? stores "" in 'command' if return value is 0 or -1]
+ */
 int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state);
 #else
 int read_line_input(const char* prompt, char* command, int maxsize);
diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index 62f8949d6..a018a53ff 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -1253,6 +1253,11 @@ static void win_changed(int nsig)
 #undef CTRL
 #define CTRL(a) ((a) & ~0x40)
 
+/* Returns:
+ * -1 on read errors or EOF, or on bare Ctrl-D.
+ * 0  on ctrl-C,
+ * >0 length of input string, including terminating '\n'
+ */
 int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *st)
 {
 	int lastWasTab = FALSE;
diff --git a/libbb/skip_whitespace.c b/libbb/skip_whitespace.c
index bdfb97d70..87b5f23ba 100644
--- a/libbb/skip_whitespace.c
+++ b/libbb/skip_whitespace.c
@@ -11,7 +11,7 @@
 
 char *skip_whitespace(const char *s)
 {
-	/* NB: isspace('0') returns 0 */
+	/* NB: isspace('\0') returns 0 */
 	while (isspace(*s)) ++s;
 
 	return (char *) s;
-- 
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