Fix escaping of dots at beginnings of lines inside multi-line text ru…

…ns passed to write()
apjanke · Dec 25, 2018 · 3dca20c · 3dca20c
1 parent 1a81697
commit 3dca20c
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Showing 4 changed files with 23 additions and 3 deletions.
diff --git a/lib/ronn/roff.rb b/lib/ronn/roff.rb
@@ -355,8 +355,8 @@ def quote(text)
     def write(text)
       return if text.nil? || text.empty?
       # lines cannot start with a '.'. insert zero-width character before.
-      if text[0, 2] == '\.' &&
-         (@buf.last && @buf.last[-1] == "\n")
+      text = text.gsub(/\n\\\./s, "\n\\\\&\\.")
+      if text[0, 2] == '\.' && (@buf.last && @buf.last[-1] == "\n")
         @buf << '\&'
       end
       @buf << text

diff --git a/test/dots_at_line_start_test.roff b/test/dots_at_line_start_test.roff
@@ -5,3 +5,15 @@
 There\'s a weird issue where dots at the beginning of a line generate troff warnings due to escaping\.
 .P
 \&\.\. let\'s see what happens\.
+.IP "" 4
+.nf
+\&\. A dot on an indented line
+
+\&\. Another dot on an indented line
+
+some text
+some more text
+\&\. A dot on an indented line as part of a paragraph
+.fi
+.IP "" 0
+
diff --git a/test/dots_at_line_start_test.ronn b/test/dots_at_line_start_test.ronn
@@ -2,3 +2,11 @@ There's a weird issue where dots at the beginning of a line
 generate troff warnings due to escaping.
 
 .. let's see what happens.
+
+    . A dot on an indented line
+
+    . Another dot on an indented line
+
+    some text
+    some more text
+    . A dot on an indented line as part of a paragraph
diff --git a/test/markdown_syntax.roff b/test/markdown_syntax.roff
@@ -893,7 +893,7 @@ _   underscore
 #   hash mark
 +   plus sign
 \-   minus sign (hyphen)
-\.   dot
+\&\.   dot
 !   exclamation mark
 .fi
 .IP "" 0