fix #1454: the default TRE could destroy the characters in strip_html…

…() so use PCRE instead
rstudio · Feb 21, 2024 · 9a23818 · 9a23818 · yihui · Feb 21, 2024
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commit 9a23818
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diff --git a/DESCRIPTION b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: bookdown
 Type: Package
 Title: Authoring Books and Technical Documents with R Markdown
-Version: 0.37.1
+Version: 0.37.2
 Authors@R: c(
     person("Yihui", "Xie", role = c("aut", "cre"), email = "[email protected]", comment = c(ORCID = "0000-0003-0645-5666")),
     person("Christophe", "Dervieux", , "[email protected]", role = c("ctb"),

diff --git a/NEWS.md b/NEWS.md
@@ -1,5 +1,6 @@
 # CHANGES IN bookdown VERSION 0.38
 
+- Fixed a bug that `gitbook()` may geneate an empty search index on certain platforms (thanks, @UlvHare, #1454).
 
 # CHANGES IN bookdown VERSION 0.37
 

diff --git a/R/utils.R b/R/utils.R
@@ -263,7 +263,7 @@ clean_meta = function(meta_file, files) {
 
 # remove HTML tags and remove extra spaces
 strip_html = function(x) {
-  gsub('\\s{2,}', ' ', xfun::strip_html(x))
+  gsub('\\s{2,}', ' ', xfun::strip_html(x), perl = TRUE)
 }
 
 # remove the <script><script> content and references