_profile: Add back "LC_CTYPE=zh_CN.UTF-8"

NOTE
----
FontConfig will check the language against system locales, in order
to prepend/enable corresponding fonts.

For example, Noto CJK font provides multiple variants for the same glyph
regions, e.g., "Noto Sans CJK JP" and "Noto Sans CJK SC" may *both* be
selected/matched to display Chinese, and the former may even get
precedence which is unexpected (see also: Han Unification [1]).

Therefore, "LC_CTYPE=zh_CN.UTF-8" should be added back, and explicitly
select the wanted/correct font (e.g., "Noto Sans CJK SC") for specific
language (e.g., "zh-cn").

[1] https://en.wikipedia.org/wiki/Han_unification

1 files changed, 1 insertions, 0 deletions

diff --git a/_profile b/_profile
index 72d3c2f..570663b 100644
--- a/_profile
+++ b/_profile
@@ -65,6 +65,7 @@ fi
 
 ## Language and locale
 export LANG="en_US.UTF-8"
+export LC_CTYPE="zh_CN.UTF-8"
 export LC_MONETARY="zh_CN.UTF-8"
 export LC_COLLATE="C"