Issue #28333: Fixes off-by-one error that was adding an extra space.

zooba · zooba · commit 6c2b9d3479fb · 2016-10-25T11:51:54.000-07:00
diff --git a/Parser/myreadline.c b/Parser/myreadline.c
@@ -225,7 +225,8 @@ PyOS_StdioReadline(FILE *sys_stdin, FILE *sys_stdout, const char *prompt)
                         if (wlen) {
                             DWORD n;
                             fflush(stderr);
-                            WriteConsoleW(hStdErr, wbuf, wlen, &n, NULL);
+                            /* wlen includes null terminator, so subtract 1 */
+                            WriteConsoleW(hStdErr, wbuf, wlen - 1, &n, NULL);
                         }
                         PyMem_RawFree(wbuf);
                     }

Original file line number	Diff line number	Diff line change
`@@ -225,7 +225,8 @@ PyOS_StdioReadline(FILE sys_stdin, FILE sys_stdout, const char *prompt)`
`225`	`225`	`if (wlen) {`
`226`	`226`	`DWORD n;`
`227`	`227`	`fflush(stderr);`
`228`		`- WriteConsoleW(hStdErr, wbuf, wlen, &n, NULL);`
	`228`	`+ /* wlen includes null terminator, so subtract 1 */`
	`229`	`+ WriteConsoleW(hStdErr, wbuf, wlen - 1, &n, NULL);`
`229`	`230`	`}`
`230`	`231`	`PyMem_RawFree(wbuf);`
`231`	`232`	`}`