epub, html: metadata text clear of markup

special_characters_text escapes the markup characters and then puts
<br /> back in for a line break. That is right for element content
and wrong in metadata. fix

(assisted by Claude-Code)

2 files changed, 53 insertions, 30 deletions

diff --git a/src/sisudoc/outputs/io_out/epub3.d b/src/sisudoc/outputs/io_out/epub3.d
index 9184369..100aff1 100644
--- a/src/sisudoc/outputs/io_out/epub3.d
+++ b/src/sisudoc/outputs/io_out/epub3.d
@@ -120,18 +120,18 @@ template outputEPub3() {
       <item id="nav" href="toc_nav.xhtml" media-type="application/xhtml+xml" properties="nav" />
   ┃",
       _uuid,
-      xhtml_format.special_characters_text(doc.matters.conf_make_meta.meta.title_main),
+      xhtml_format.special_characters_plain(doc.matters.conf_make_meta.meta.title_main),
       (doc.matters.conf_make_meta.meta.title_sub.empty)
-        ? "" : xhtml_format.special_characters_text(doc.matters.conf_make_meta.meta.title_sub),
+        ? "" : xhtml_format.special_characters_plain(doc.matters.conf_make_meta.meta.title_sub),
       (doc.matters.conf_make_meta.meta.creator_author.empty)
-        ? "" : xhtml_format.special_characters_text(doc.matters.conf_make_meta.meta.creator_author),
+        ? "" : xhtml_format.special_characters_plain(doc.matters.conf_make_meta.meta.creator_author),
       (doc.matters.conf_make_meta.meta.creator_author.empty)
-        ? "" : xhtml_format.special_characters_text(doc.matters.conf_make_meta.meta.creator_author),
+        ? "" : xhtml_format.special_characters_plain(doc.matters.conf_make_meta.meta.creator_author),
       doc.matters.src.language,                                   // language, fix (needed in dochead metadata)
       (doc.matters.conf_make_meta.meta.date_published.empty)
-        ? "" : xhtml_format.special_characters_date(doc.matters.conf_make_meta.meta.date_published),
+        ? "" : xhtml_format.special_characters_plain_date(doc.matters.conf_make_meta.meta.date_published),
       (doc.matters.conf_make_meta.meta.rights_copyright.empty)
-        ? "" : xhtml_format.special_characters_text(doc.matters.conf_make_meta.meta.rights_copyright),
+        ? "" : xhtml_format.special_characters_plain(doc.matters.conf_make_meta.meta.rights_copyright),
       _uuid,
       _uuid,
       (pth_epub3.fn_oebps_css).chompPrefix("OEBPS/"),
diff --git a/src/sisudoc/outputs/io_out/xmls.d b/src/sisudoc/outputs/io_out/xmls.d
index 10e0518..4cc4599 100644
--- a/src/sisudoc/outputs/io_out/xmls.d
+++ b/src/sisudoc/outputs/io_out/xmls.d
@@ -108,6 +108,29 @@ template outputXHTMLs() {
         .replaceAll(rgx.nbsp_char,          " ");
       return _txt;
     }
+    /+ the same escaping for where markup cannot go.  +/
+    string special_characters_plain(string _txt) {
+      _txt = _txt
+        .replaceAll(rgx.br_line,            " ")
+        .replaceAll(rgx.br_line_inline,     " ")
+        .replaceAll(rgx.br_line_spaced,     " ")
+        .replaceAll(rgx_xhtml.ampersand,    "&amp;")
+        .replaceAll(rgx_xhtml.quotation,    "&quot;")
+        .replaceAll(rgx_xhtml.less_than,    "&lt;")
+        .replaceAll(rgx_xhtml.greater_than, "&gt;")
+        .replaceAll(rgx.nbsp_char,          " ");
+      return _txt;
+    }
+    /+ ↓ a date for an attribute value: the same trimming, no markup +/
+    string special_characters_plain_date(string _txt) {
+      _txt = _txt
+        .replaceAll(regex(r"(?:-00)+"),     "")
+        .replaceAll(rgx.br_line,            " ")
+        .replaceAll(rgx.br_line_inline,     " ")
+        .replaceAll(rgx.br_line_spaced,     " ")
+        .replaceAll(rgx.nbsp_char,          " ");
+      return _txt;
+    }
     string special_characters_date(string _txt) {
       _txt = _txt
         .replaceAll(regex(r"(?:-00)+"),     "")
@@ -214,19 +237,19 @@ template outputXHTMLs() {
     <meta name="generator" content="%s" />
     <link rel="generator" href="%s" />
     <!-- spine DocReform header metadata -->┃",
-        special_characters_text(doc_matters.conf_make_meta.meta.title_full),
-        special_characters_text(doc_matters.conf_make_meta.meta.creator_author),
+        special_characters_plain(doc_matters.conf_make_meta.meta.title_full),
+        special_characters_plain(doc_matters.conf_make_meta.meta.creator_author),
         _publisher,
-        special_characters_date(doc_matters.conf_make_meta.meta.date_published),
-        special_characters_text(doc_matters.conf_make_meta.meta.date_created),
-        special_characters_text(doc_matters.conf_make_meta.meta.date_issued),
-        special_characters_text(doc_matters.conf_make_meta.meta.date_available),
-        special_characters_text(doc_matters.conf_make_meta.meta.date_valid),
-        special_characters_text(doc_matters.conf_make_meta.meta.date_modified),
+        special_characters_plain_date(doc_matters.conf_make_meta.meta.date_published),
+        special_characters_plain(doc_matters.conf_make_meta.meta.date_created),
+        special_characters_plain(doc_matters.conf_make_meta.meta.date_issued),
+        special_characters_plain(doc_matters.conf_make_meta.meta.date_available),
+        special_characters_plain(doc_matters.conf_make_meta.meta.date_valid),
+        special_characters_plain(doc_matters.conf_make_meta.meta.date_modified),
         doc_matters.src.language,
-        special_characters_text(doc_matters.conf_make_meta.meta.rights_copyright),
-        doc_matters.opt.action.generated_by ? special_characters_text(doc_matters.generator_program.name_and_version) : "",
-        special_characters_text(doc_matters.generator_program.url_home),
+        special_characters_plain(doc_matters.conf_make_meta.meta.rights_copyright),
+        doc_matters.opt.action.generated_by ? special_characters_plain(doc_matters.generator_program.name_and_version) : "",
+        special_characters_plain(doc_matters.generator_program.url_home),
       );
       return o;
     }
@@ -443,22 +466,22 @@ template outputXHTMLs() {
     <body lang="%s">
     <a name="top" id="top"></a>┃",
         html_simple,
-        special_characters_text(doc_matters.conf_make_meta.meta.title_full),
+        special_characters_plain(doc_matters.conf_make_meta.meta.title_full),
         (doc_matters.conf_make_meta.meta.creator_author.empty) ? ""
-          : ", " ~ special_characters_text(doc_matters.conf_make_meta.meta.creator_author),
-        special_characters_text(doc_matters.conf_make_meta.meta.title_full),
+          : ", " ~ special_characters_plain(doc_matters.conf_make_meta.meta.creator_author),
+        special_characters_plain(doc_matters.conf_make_meta.meta.title_full),
         (doc_matters.conf_make_meta.meta.creator_author.empty) ? ""
-          : ", " ~ special_characters_text(doc_matters.conf_make_meta.meta.creator_author),
-        special_characters_date(doc_matters.conf_make_meta.meta.date_published),
-        special_characters_text(doc_matters.conf_make_meta.meta.date_created),
-        special_characters_text(doc_matters.conf_make_meta.meta.date_issued),
-        special_characters_text(doc_matters.conf_make_meta.meta.date_available),
-        special_characters_text(doc_matters.conf_make_meta.meta.date_valid),
-        special_characters_text(doc_matters.conf_make_meta.meta.date_modified),
+          : ", " ~ special_characters_plain(doc_matters.conf_make_meta.meta.creator_author),
+        special_characters_plain_date(doc_matters.conf_make_meta.meta.date_published),
+        special_characters_plain(doc_matters.conf_make_meta.meta.date_created),
+        special_characters_plain(doc_matters.conf_make_meta.meta.date_issued),
+        special_characters_plain(doc_matters.conf_make_meta.meta.date_available),
+        special_characters_plain(doc_matters.conf_make_meta.meta.date_valid),
+        special_characters_plain(doc_matters.conf_make_meta.meta.date_modified),
         doc_matters.src.language,
-        special_characters_text(doc_matters.conf_make_meta.meta.rights_copyright),
-        special_characters_text(doc_matters.generator_program.name_and_version),
-        special_characters_text(doc_matters.generator_program.url_home),
+        special_characters_plain(doc_matters.conf_make_meta.meta.rights_copyright),
+        special_characters_plain(doc_matters.generator_program.name_and_version),
+        special_characters_plain(doc_matters.generator_program.url_home),
         doc_matters.src.language,
       );
       return o;