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POStrange behavior of vim color inside screen with 256 colors
 

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  1. POStrange behavior of vim color inside screen with 256 colors
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    <p>I was trying to make the syntax highlighting (with 256 colors) of <code>vim</code> work inside <code>screen</code>, which is running inside <code>gterm</code>.</p> <p>It works quite fine in the beginning. What I mean by "in the beginning" is, after I start <code>screen</code>, and enter <code>vim</code>, the colors look fine, and there are really 256 colors.</p> <p>But after a while (I don't know exactly how long) the colors automatically change back to an appearance as if there are only 8 (or 16?) colors.</p> <p>For example, after this has already occurred, if I enter the command</p> <pre><code>hi Comment ctermfg=68 </code></pre> <p>inside <code>vim</code>, the comments appear to be "pure" green; however, if I open another <code>vim</code> outside screen (in the same terminal), then with the same command the comments appear to be a "yellowish" green.</p> <p>The following is my .screenrc settings related to color:</p> <pre><code>attrcolor b ".I" defbce "on" termcapinfo xterm 'Co#256:AB=\E[48;5;%dm:AF=\E[38;5;%dm' term xterm-256color </code></pre> <p>After running a python script to display all the colors, I find out that maybe this is a problem of screen itself, and has nothing to do with vim.</p> <p>What I did is, inside the <code>screen</code> session with problems, this script gives 256 colors, but many of them are actually the same; however, when I start a new screen session with the same configuration, this script gives 256 colors which are distinct from each other.</p> <p>Edit:</p> <p>Last night I connected to my Linux computer (which is in my office and it is always on) with <code>putty</code>, then opened a <code>screen</code> session with multiple windows in it. The colors are correct last night. Then before I went to sleep I detached the <code>screen</code> session and closed <code>putty</code>.</p> <p>Now in the morning when I attach that <code>screen</code> session in <code>putty</code> again, the colors crash: they appear as if there are only 8 colors.</p> <p>The colors are fine outside <code>screen</code> (but still in <code>putty</code>).</p> <p>Edit:</p> <p>Three years later after I asked this question, today I saw a similar problem. The problem is that <code>vim</code> can display 256 colors outside <code>screen</code>, and <code>screen</code> can display 256 colors with a test script, but <code>vim</code> can't display any color (can only display black and white) inside <code>screen</code>. Just as a note to myself, here is the <code>.screenrc</code> file I am using</p> <pre><code>hardstatus alwayslastline "%{.bW}%-w%{.rW}%n %t%{-}%+w %=%{..G} %H %{..Y} %Y-%m-%d %c" shell "bash" startup_message off vbell off altscreen on attrcolor b ".I" defbce "on" termcapinfo xterm* 'is=\E[r\E[m\E[2J\E[H\E[?7h\E[?1;4;6l' termcapinfo xterm 'Co#256:AB=\E[48;5;%dm:AF=\E[38;5;%dm' term screen-256color </code></pre> <p>The solution to the problem is already mentioned in the accepted answer, namely, I need to include</p> <pre><code>export TERM=xterm-256color </code></pre> <p>in <code>.bashrc</code>.</p>
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    1. USVadim Kotov
    1. USFJDU
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    1. CODid you try your configuration with another terminal emulator? I tried your options with gnome-terminal and xterm. It work ok with both no matter how many sessions i opened.
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      1. USPablo Castellazzi
    2. COBoth screen and tmux [are known](http://superuser.com/questions/145475/terminal-proxy-or-screen-without-terminal-emulation) to spoil hues. If you don't need advanced screen features but only protection from accidental terminal closing you can use dtach. For all colors I saw hues are spoiled not much, so maybe you should instead change a terminal emulator.
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    3. COThanks for answering! After having been waiting for almost one day, the problem finally reappears. But I still don't know what actually triggered this problem.
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