LaTeX reader: Support more text-mode accents.

Add support for `\|`, `\b`, `\G`, `\h`, `\d`, `\f`,
`\r`, `\t`, `\U`, `\i`, `\j`, `\newtie`, `\textcircled`.

Also fall back to combining characters when composed
characters are not available.

Closes #4652.

1 files changed, 4 insertions, 4 deletions

diff --git a/test/command/macros.md b/test/command/macros.md
index 9de87e7a0..d091c2191 100644
--- a/test/command/macros.md
+++ b/test/command/macros.md
@@ -24,18 +24,18 @@ expanded at point of use:
 % pandoc -f latex -t latex
 \let\a\b
 \newcommand{\b}{\emph{ouk}}
-\a
+\a a
 ^D
-\b
+a̱
 ```
 
 ```
 % pandoc -f latex -t latex
 \newcommand{\a}{\b}
 \newcommand{\b}{\emph{ouk}}
-\a
+\a a
 ^D
-\emph{ouk}
+\emph{ouk}a
 ```
 
 ```