From f4119b659bed4bc18c9e70e2073e342ae6b8d8f6 Mon Sep 17 00:00:00 2001
From: Wu Zhenyu <wuzhenyu@ustc.edu>
Date: Sun, 11 Feb 2024 22:15:08 +0800
Subject: [PATCH] :children_crossing: Improve mdcat()

---
 README.md          |  3 ++-
 functions/main.zsh | 19 ++++++++++++++-----
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index 2c13f33..c976a3c 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,8 @@ You need some optional tools:
 - [pandoc](https://github.com/jgm/pandoc): convert any kind of file to
   markdown. Any generated cache file will be store in same
   `/tmp/zsh-fzf-tab-$USER` as [fzf-tab](https://github.com/Aloxaf/fzf-tab)
-- [mdcat](https://github.com/swsnr/mdcat): render markdown
+- render markdown: Refer
+  <https://github.com/foxfriends/paper-terminal#comparison-with-other-command-line-markdown-renderers>
 - [grc](https://github.com/garabik/grc): colorize the output of some commands
 - [less](https://github.com/vbwagner/less): a pager
 
diff --git a/functions/main.zsh b/functions/main.zsh
index b685664..a24f74e 100644
--- a/functions/main.zsh
+++ b/functions/main.zsh
@@ -1,14 +1,23 @@
 # define some functions to avoid any error that these programs don't exist
 # treat bat -lXXX as cat
-(($+commands[bat])) && bat() {command bat --color=always -p $@} ||
-  bat() {command cat}
-(($+commands[pandoc])) || pandoc() {command cat ${@[-1]}}
-(($+commands[mdcat])) || mdcat() {bat -lmarkdown}
-(($+commands[grc])) || grc() {eval ${@[2,-1]}}
+# currently, only bat supports highlight --help
+(($+commands[bat])) && bat() {command bat --color=always -p $@} || bat() {command cat}
+if ((! $+commands[mdcat])); then
+  if (($+commands[paper])); then
+    mdcat() {command paper $@}
+  elif (($+commands[mdless])); then
+    mdcat() {command mdless $@}
+  else
+    # use bat() as fallback
+    mdcat() {bat -lmarkdown}
+  fi
+fi
 if ((! $+commands[finger])); then
   (($+commands[pinky])) && finger() {command pinky $@} ||
     finger() {command whoami}
 fi
+(($+commands[pandoc])) || pandoc() {command cat ${@[-1]}}
+(($+commands[grc])) || grc() {eval ${@[2,-1]}}
 # https://github.com/Freed-Wu/fzf-tab-source/issues/6
 if (($+commands[less])) && [ -x ~/.lessfilter ]; then
   less() {~/.lessfilter $@ || command less $@}