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system/readline/readline_common.c: Don't save the command again in the

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history buffer if it's the one at the top.
This commit is contained in:
Ouss4 2020-08-22 11:57:22 +01:00 committed by David Sidrane
parent a1b8ad9190
commit aa717d59fd
1 changed files with 16 additions and 9 deletions
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25
system/readline/readline_common.c
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@ -694,19 +694,26 @@ ssize_t readline_common(FAR struct rl_common_s *vtbl, FAR char *buf,
if (nch >= 1)
{
g_cmdhist.head = (g_cmdhist.head + 1) % RL_CMDHIST_LEN;
/* If this command is the one at the top of the circular
* buffer, don't save it again.
*/
for (i = 0; (i < nch) && i < (RL_CMDHIST_LINELEN - 1); i++)
if (strncmp(buf, g_cmdhist.buf[g_cmdhist.head], nch) != 0)
{
g_cmdhist.buf[g_cmdhist.head][i] = buf[i];
}
g_cmdhist.head = (g_cmdhist.head + 1) % RL_CMDHIST_LEN;
g_cmdhist.buf[g_cmdhist.head][i] = '\0';
g_cmdhist.offset = 1;
for (i = 0; (i < nch) && i < (RL_CMDHIST_LINELEN - 1); i++)
{
g_cmdhist.buf[g_cmdhist.head][i] = buf[i];
}
if (g_cmdhist.len < RL_CMDHIST_LEN)
{
g_cmdhist.len++;
g_cmdhist.buf[g_cmdhist.head][i] = '\0';
g_cmdhist.offset = 1;
if (g_cmdhist.len < RL_CMDHIST_LEN)
{
g_cmdhist.len++;
}
}
}
#endif /* CONFIG_READLINE_CMD_HISTORY */