3 files changed, 7 insertions, 2 deletions
diff --git a/Build/source/texk/web2c/cwebdir/ChangeLog b/Build/source/texk/web2c/cwebdir/ChangeLog
index 3a9005f41de..1d497d28d6b 100644
--- a/Build/source/texk/web2c/cwebdir/ChangeLog
+++ b/Build/source/texk/web2c/cwebdir/ChangeLog
@@ -1,3 +1,8 @@
+2020-06-07  Andreas Scherer  <https://ascherer.github.io>
+
+	* comm-w2c.ch,
+	* comm-w2c.h: Underscore 'enum'erated values in index.
+
 2020-06-06  Andreas Scherer  <https://ascherer.github.io>
 
 	* comm-w2c.ch: Add index entries for the CWEBINPUTS envvar.
diff --git a/Build/source/texk/web2c/cwebdir/comm-w2c.ch b/Build/source/texk/web2c/cwebdir/comm-w2c.ch
index f3cd1bbad9d..3fc83215a4a 100644
--- a/Build/source/texk/web2c/cwebdir/comm-w2c.ch
+++ b/Build/source/texk/web2c/cwebdir/comm-w2c.ch
@@ -56,7 +56,7 @@ typedef uint16_t sixteen_bits;
 boolean program; /* \.{CWEAVE} or \.{CTANGLE}? */
 @y
 typedef enum {
-  ctangle, cweave, ctwill
+  @!ctangle, @!cweave, @!ctwill
 } cweb;
 cweb program; /* \.{CTANGLE} or \.{CWEAVE} or \.{CTWILL}? */
 @z
diff --git a/Build/source/texk/web2c/cwebdir/comm-w2c.h b/Build/source/texk/web2c/cwebdir/comm-w2c.h
index e8a251f61e8..2294c1eaa8d 100644
--- a/Build/source/texk/web2c/cwebdir/comm-w2c.h
+++ b/Build/source/texk/web2c/cwebdir/comm-w2c.h
@@ -36,7 +36,7 @@ typedef bool boolean;
 typedef uint8_t eight_bits;
 typedef uint16_t sixteen_bits;
 typedef enum {
-  ctangle, cweave, ctwill
+  @!ctangle, @!cweave, @!ctwill
 } cweb;
 extern cweb program; /* \.{CTANGLE} or \.{CWEAVE} or \.{CTWILL}? */
 extern int phase; /* which phase are we in? */