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Add back terminal detection for old libedits

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Using the system libedit means that libedit will again make absolute
movements on certain kinds of terminals.  Older versions of libedit
without EL_PROMPT_ESC miscalculate the length of the prompt.
Combined, this results in the cursor ending up in the wrong place.

We knew this was a possibility when we moved to system libedit, and
we're OK with it.  We certainly lived without this fancy prompt
feature for a long time.

This change puts back in place detection of the terminal type when
EL_PROMPT_ESC isn't available.  On these older versions of libedit,
we'll only enable the fancy features when we know that libedit will
only make relative movements and not tickle the bug.

This partially reverts commit:
b9b77bd6156b4343f8baa9ca1a0c803108dbcdb4
This commit is contained in:
Travis Cross 2014-03-27 17:05:20 +00:00
parent dc093d179e
commit 4f54f912c3
1 changed files with 14 additions and 2 deletions
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16
libs/esl/fs_cli.c
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@ -1352,10 +1352,22 @@ int main(int argc, char *argv[])
int loops = 2, reconnect = 0;
char *ccheck;
#ifdef WIN32
#if HAVE_DECL_EL_PROMPT_ESC
feature_level = 0;
#else
feature_level = 1;
{
char *term = getenv("TERM");
if (term && (!strncasecmp("screen", term, 6) ||
!strncasecmp("vt100", term, 5))) {
feature_level = 1;
} else {
feature_level = 0;
}
}
#endif
#ifdef WIN32
feature_level = 0;
#endif
if ((ccheck = getenv("FS_CLI_COLOR"))) {