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path: root/support/make4ht/make4ht-indexing.lua
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-rw-r--r--support/make4ht/make4ht-indexing.lua2
1 files changed, 1 insertions, 1 deletions
diff --git a/support/make4ht/make4ht-indexing.lua b/support/make4ht/make4ht-indexing.lua
index a86fd139aa..eb9c9b5017 100644
--- a/support/make4ht/make4ht-indexing.lua
+++ b/support/make4ht/make4ht-indexing.lua
@@ -75,7 +75,7 @@ local parse_idx = function(content)
if line:match("^\\beforeentry") then
-- increment index entry number
current_entry = current_entry + 1
- local file, dest = line:match("\\beforeentry{(.-)}{(.-)}")
+ local file, dest = line:match("\\beforeentry%s*{(.-)}{(.-)}")
map[current_entry] = {file = file, dest = dest}
elseif line:match("^\\indexentry") then
-- replace the page number with the current