🚀 go-pugleaf

   From: roland@ai.mit.edu (Roland McGrath)
   Date: Wed, 21 Jun 89 12:59:59 JST

   The history number displayed by \# in PS1 does not correspond
   to the numbers used in ! history references or the `history' builtin.
   The numbers given by \# start at 1 with each bash invocation,
   while the real history numbers start at the beginning of .bash_history.

The number display by \# is not the history number.  Here is some text
from FEATURES:

	Here is the comment next to the decode_prompt_string function.

	/* Return a string which will be printed as a prompt.  The string
	   may contain special characters which are decoded as follows:

		\t	the time
		\d	the date
		\n	CRLF
		\s	the name of the shell
		\w	the current working directory
		\u	your username
		\h	the hostname
		\#	the command number of this command
		\<octal> character code in octal
		\\	a backslash
	*/

It appears that more than one person wants the behaviour of "\!" in csh.
However, I have been wondering about other possible ways of handling
prompt strings, including standard word evaluation of it.

Brian

In article <8906210400.AA08380@hobbes.ai.mit.edu> roland@AI.MIT.EDU (Roland McGrath) writes:
>The history number displayed by \# in PS1 does not correspond
>to the numbers used in ! history references or the `history' builtin.
>The numbers given by \# start at 1 with each bash invocation,
>while the real history numbers start at the beginning of .bash_history.

This seems to fix that problem. I'm not sure this is the 'right' way of
fixing it, but it works.

*** history.c.orig	Tue Jun 13 12:03:19 1989
--- history.c	Thu Jun 15 12:52:03 1989
***************
*** 354,361 ****
  	line = (char *)xrealloc (line, line_size += TYPICAL_LINE_SIZE);
      }
      line[i] = '\0';
!     if (line[0])
        add_history (line);
    }
    free (line);
    fclose (file);
--- 354,364 ----
  	line = (char *)xrealloc (line, line_size += TYPICAL_LINE_SIZE);
      }
      line[i] = '\0';
!     if (line[0]) {
!       extern int current_command_number;
!       current_command_number++;
        add_history (line);
+     }
    }
    free (line);
    fclose (file);
-- 
Thomas Thyberg			INET : thomas@prosys.se
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