add filter to avoid linebreak between a number and a unit or quantifier

2 files changed, 26 insertions, 0 deletions

diff --git a/_extensions/js/nobreaks/_extension.yml b/_extensions/js/nobreaks/_extension.yml
new file mode 100644
index 0000000..c25344e
--- /dev/null
+++ b/_extensions/js/nobreaks/_extension.yml
@@ -0,0 +1,6 @@
+title: NoBreaks
+author: Jonas Smedegaard
+version: 0.0.2
+contributes:
+  filters:
+    - nobreaks.lua
diff --git a/_extensions/js/nobreaks/nobreaks.lua b/_extensions/js/nobreaks/nobreaks.lua
new file mode 100644
index 0000000..dad13d5
--- /dev/null
+++ b/_extensions/js/nobreaks/nobreaks.lua
@@ -0,0 +1,20 @@
+-- Avoid linebreak between a number and a unit or quantifier
+
+local non_breaking_space = pandoc.Str("\u{00A0}")
+
+function Para(el)
+  for i = 1, #el.content - 1 do
+    if el.content[i].t == "Space" then
+      local el_prev = el.content[i - 1]
+      local el_next = el.content[i + 1]
+      if el_prev and el_next
+        and el_prev.t == "Str" and el_next.t == "Str"
+        and string.match(el_prev.text, "%d$")
+        and string.match(el_next.text, "^[%a%%§°]")
+      then
+        el.content[i] = non_breaking_space
+      end
+    end
+  end
+  return el
+end