diff options
| -rw-r--r-- | whichbas.1 | 7 | ||||
| -rw-r--r-- | whichbas.rst | 8 |
2 files changed, 11 insertions, 4 deletions
@@ -98,13 +98,17 @@ or OSS BASIC XL". .sp Atari Microsoft BASIC is detected by checking that: .INDENT 0.0 +.INDENT 3.5 +.INDENT 0.0 .IP \(bu 2 -the first byte of the file \fB$00\fP\&. +the first byte of the file is \fB$00\fP\&. .IP \(bu 2 the next 2 bytes (LSB/MSB) are the same as the actual file length minus 3. .IP \(bu 2 the last 3 bytes of the file are zero. .UNINDENT +.UNINDENT +.UNINDENT .sp This may result in false positives (files that aren\(aqt BASIC programs at all might show up as Microsoft). Also, no distinction is made between @@ -126,6 +130,7 @@ If you need the \fBfile\fP(1) command, use it. \fBwhichbas\fP knows nothing about other BASICs such as Frost BASIC, or Altirra BASIC. .SH BUGS +.SS Misdetection .sp It\(aqs possible to get a BASIC XL/XE program to misdetect as Atari BASIC by writing a program that does these things: diff --git a/whichbas.rst b/whichbas.rst index b4150e1..5a09c6a 100644 --- a/whichbas.rst +++ b/whichbas.rst @@ -69,11 +69,11 @@ or OSS BASIC XL". Atari Microsoft BASIC is detected by checking that: -- the first byte of the file **$00**\. + - the first byte of the file is **$00**\. -- the next 2 bytes (LSB/MSB) are the same as the actual file length minus 3. + - the next 2 bytes (LSB/MSB) are the same as the actual file length minus 3. -- the last 3 bytes of the file are zero. + - the last 3 bytes of the file are zero. This may result in false positives (files that aren't BASIC programs at all might show up as Microsoft). Also, no distinction is made between @@ -97,6 +97,8 @@ or Altirra BASIC. BUGS ==== +Misdetection +------------ It's possible to get a BASIC XL/XE program to misdetect as Atari BASIC by writing a program that does these things: |