Details are in the attached patch file.
Eliminate "Unknown ESC sequence: ..." messages caused by applying
modifiers (shift, alt and ctrl) to cursor keys.
Holding down a modifier key adds parameters to the cursor key escape
sequence. `ESC [ x` becomes `ESC [ 1 ; # x`, where `#` depends upon
the modifier key.
This patch causes ESCmap::is_equal() and ESCmap::has_prefix() to
ignore parameters when matching incoming key sequences. The cursor
keys now have identical behavior whether or not a modifier key is
present.
Index: src/LineInput.cc
===================================================================
--- src/LineInput.cc (revision 501)
+++ src/LineInput.cc (working copy)
@@ -80,13 +80,15 @@
bool
ESCmap::has_prefix(const char * seq, int seq_len) const
{
- if (seq_len >= len) return false;
+ int ss = 0;
loop(s, seq_len)
{
- if (seq[s] != seqence[s]) return false;
+ if (!isdigit(seq[s]) && seq[s] != ';') {
+ if (seq[s] != seqence[ss++]) return false;
+ }
}
- return true;
+ return ss < len;
}
//-----------------------------------------------------------------------------
void
@@ -100,13 +102,15 @@
bool
ESCmap::is_equal(const char * seq, int seq_len) const
{
- if (len != seq_len) return false;
+ int ss = 0;
loop(s, seq_len)
{
- if (seq[s] != seqence[s]) return false;
+ if (!isdigit(seq[s]) && seq[s] != ';') {
+ if (seq[s] != seqence[ss++]) return false;
+ }
}
- return true;
+ return ss == len;
}
//=============================================================================
LineHistory::LineHistory(int maxl)
