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[CMD] Fix CTRL-C handling.

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Using CTRL-C to cancel command line input would leave the prompt in
a state where the next command would be ignored.  For example:

dir<CTRL-C>
dir

would cause cmd.exe to ignore the second dir command.
This commit is contained in:
James Woodcock 2018-04-27 16:15:38 +01:00 • committed by Hermès Bélusca-Maïto
parent 23de2099e0
commit d7e71357dc
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GPG key ID: 3B2539C65E7B93D0
3 changed files with 24 additions and 6 deletions
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11
base/shell/cmd/cmd.c
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@ -151,7 +151,7 @@ typedef NTSTATUS (WINAPI *NtReadVirtualMemoryProc)(HANDLE, PVOID, PVOID, ULONG,
BOOL bExit = FALSE; /* indicates EXIT was typed */
BOOL bCanExit = TRUE; /* indicates if this shell is exitable */
BOOL bCtrlBreak = FALSE; /* Ctrl-Break or Ctrl-C hit */
volatile BOOL bCtrlBreak = FALSE; /* Ctrl-Break or Ctrl-C hit */
BOOL bIgnoreEcho = FALSE; /* Set this to TRUE to prevent a newline, when executing a command */
static BOOL bWaitForCommand = FALSE; /* When we are executing something passed on the commandline after /c or /k */
INT nErrorLevel = 0; /* Errorlevel of last launched external program */
@ -1423,6 +1423,12 @@ ReadLine(TCHAR *commandline, BOOL bMore)
ConOutChar(_T('\n'));
return FALSE;
}
if (readline[0] == L'\0')
{
return FALSE;
}
ip = readline;
}
else
@ -1476,6 +1482,8 @@ BOOL WINAPI BreakHandler(DWORD dwCtrlType)
LeaveCriticalSection(&ChildProcessRunningLock);
}
bCtrlBreak = TRUE;
rec.EventType = KEY_EVENT;
rec.Event.KeyEvent.bKeyDown = TRUE;
rec.Event.KeyEvent.wRepeatCount = 1;
@ -1490,7 +1498,6 @@ BOOL WINAPI BreakHandler(DWORD dwCtrlType)
1,
&dwWritten);
bCtrlBreak = TRUE;
/* FIXME: Handle batch files */
//ConOutPrintf(_T("^C"));