* doc/coreutils.texi (wc invocation): Desscribe --debug.
* src/wc.c (usage): Likewise.
* NEWS: Mention the bug fix.
---
NEWS | 4 ++++
doc/coreutils.texi | 5 +++++
src/wc.c | 3 +++
3 files changed, 12 insertions(+)
diff --git a/NEWS b/NEWS
index 61d784252..b344452db 100644
--- a/NEWS
+++ b/NEWS
@@ -8,6 +8,10 @@ GNU coreutils NEWS -*-
outline -*-
This also applies to the sha*sum and b2sum utilities.
[This bug was present in "the beginning".]
+ wc now documents its --debug option, currently used to
+ indicate the line count acceleration being used.
+ [bug introduced in coreutils-9.0]
+
* Noteworthy changes in release 9.9 (2025-11-10) [stable]
diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index 0218a76c8..618889e40 100644
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -3992,6 +3992,11 @@ Print only the newline character counts.
If a file ends in a non-newline character,
its trailing partial line is not counted.
+@item --debug
+@opindex --debug
+Output extra information to standard error.
+Currently; print the line count acceleration implementation being used.
+
@item -L
@itemx --max-line-length
@opindex -L
diff --git a/src/wc.c b/src/wc.c
index 243399393..6b46412fb 100644
--- a/src/wc.c
+++ b/src/wc.c
@@ -187,6 +187,9 @@ the following order: newline, word, character, byte,
maximum line length.\n\
-c, --bytes print the byte counts\n\
-m, --chars print the character counts\n\
-l, --lines print the newline counts\n\
+"), stdout);
+ fputs (_("\
+ --debug indicate what line count acceleration is used\n\
"), stdout);
fputs (_("\
--files0-from=F read input from the files specified by\n\
--
2.51.1
