[TUHS] Diff and Patch on v7

[Will Senn]

On 7/25/20 9:03 AM, Leah Neukirchen wrote:
> Will Senn <will.senn at gmail.com> writes:
>
>> I got a diff for adding actual backspace and delete to v7, linked off
>> of gunkies... Anyhow, I can manually edit the referenced files and
>> rebuild, but I would rather do it canonically. I don't see patch
>> anywhere, so did v7 users use diffs to patch source and if so what's
>> the magic?
> patch(1) was written by Larry Wall in 1985, and released over Usenet.
>
> v7 users likely used diff -e, and piped to ed to apply it.
>
That makes sense. So, if that's how it went then I'm wondering if my 
diff is meant to run against source on the host and the results placed 
into v7, rather than run in v7. Does this look like a modern diff vs the 
old stuff?:

--- usr/src/cmd/getty.c    1979-05-05 08:19:21.000000000 +0100
+++ usr.fix/src/cmd/getty.c    2018-01-09 11:07:37.157953044 +0100
@@ -5,11 +5,11 @@

  #include <sgtty.h>
  #include <signal.h>
-#define ERASE    '#'
-#define KILL    '@'
+#define ERASE    '\177'
+#define KILL    '\025'

  struct sgttyb tmode;
-struct tchars tchars = { '\177', '\034', '\021', '\023', '\004', '\377' };
+struct tchars tchars = { '\003', '\034', '\021', '\023', '\004', '\377' };

  struct    tab {
      char    tname;        /* this table name */


Will

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