From: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date: Fri, 6 Nov 2015 19:01:00 +0000 (+0100)
Subject: Fix ttywrite()
X-Git-Url: https://git.xinqibao.xyz/st.git/commitdiff_plain/9f6d8845df3f81e2bc86f593a2f93e098422b2fa?ds=sidebyside;hp=9f6d8845df3f81e2bc86f593a2f93e098422b2fa

Fix ttywrite()

ttywrite was assuming that if it could not write then it could
read, but this is not necessarily true, there are some situations
where you cannot read or write. The correct behaviour is to detect
if you can read or/and write.
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