diff --git a/.gitignore b/.gitignore
index 5244447..241e96e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -96,6 +96,7 @@
 
 # Generated by "make install"
 runtime/doc/doctags
+runtime/doc/tags-*
 
 # Temporarily generated by "runtime/syntax/generator/make"
 runtime/syntax/generator/generator.err
diff --git a/.hgignore b/.hgignore
index 14fc3ec..8b73f1b 100644
--- a/.hgignore
+++ b/.hgignore
@@ -98,6 +98,7 @@
 
 # Generated by "make install"
 runtime/doc/doctags
+runtime/doc/tags-*
 
 # Generated by "make shadow".  The directory names could be anything but we
 # restrict them to shadow (the default) or shadow-*