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Fix bug discovered by John W. Shipman -- when the width of a format 

specifier came from an int expression instead of a constant in the
format, a negative width was truncated to zero instead of taken to
mean the same as that negative constant plugged into the format.  E.g.
"(%*s)" % (-5, "foo") yielded "(foo)" while "(%-5s)" yields "(foo  )".
Now both yield the latter -- like sprintf() in C.
This commit is contained in:
Guido van Rossum 1999-06-07 15:12:32 +00:00
parent 729afc1dff
commit 98c9eba945
1 changed files with 4 additions and 2 deletions
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6
Objects/stringobject.c
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@ -832,8 +832,10 @@ PyString_Format(format, args)
goto error; goto error;
} }
width = PyInt_AsLong(v); width = PyInt_AsLong(v);
if (width < 0) if (width < 0) {
width = 0; flags |= F_LJUST;
width = -width;
}
if (--fmtcnt >= 0) if (--fmtcnt >= 0)
c = *fmt++; c = *fmt++;
} }