Imported from ../bash-1.14.7.tar.gz.
This commit is contained in:
Jari Aalto
commit
726f63884d
402 changed files with 150297 additions and 0 deletions
198
lib/readline/doc/hsuser.texinfo
Normal file
198
lib/readline/doc/hsuser.texinfo
Normal file
|
|
@ -0,0 +1,198 @@
|
|||
@ignore
|
||||
This file documents the user interface to the GNU History library.
|
||||
|
||||
Copyright (C) 1988, 1991 Free Software Foundation, Inc.
|
||||
Authored by Brian Fox and Chet Ramey.
|
||||
|
||||
Permission is granted to make and distribute verbatim copies of this manual
|
||||
provided the copyright notice and this permission notice are preserved on
|
||||
all copies.
|
||||
|
||||
Permission is granted to process this file through Tex and print the
|
||||
results, provided the printed document carries copying permission notice
|
||||
identical to this one except for the removal of this paragraph (this
|
||||
paragraph not being relevant to the printed manual).
|
||||
|
||||
Permission is granted to copy and distribute modified versions of this
|
||||
manual under the conditions for verbatim copying, provided also that the
|
||||
GNU Copyright statement is available to the distributee, and provided that
|
||||
the entire resulting derived work is distributed under the terms of a
|
||||
permission notice identical to this one.
|
||||
|
||||
Permission is granted to copy and distribute translations of this manual
|
||||
into another language, under the above conditions for modified versions.
|
||||
@end ignore
|
||||
|
||||
@node Using History Interactively
|
||||
@chapter Using History Interactively
|
||||
|
||||
@ifset BashFeatures
|
||||
This chapter describes how to use the GNU History Library interactively,
|
||||
from a user's standpoint. It should be considered a user's guide. For
|
||||
information on using the GNU History Library in your own programs,
|
||||
see the GNU Readline Library Manual.
|
||||
@end ifset
|
||||
@ifclear BashFeatures
|
||||
This chapter describes how to use the GNU History Library interactively,
|
||||
from a user's standpoint. It should be considered a user's guide. For
|
||||
information on using the GNU History Library in your own programs,
|
||||
@pxref{Programming with GNU History}.
|
||||
@end ifclear
|
||||
|
||||
@menu
|
||||
* History Interaction:: What it feels like using History as a user.
|
||||
@end menu
|
||||
|
||||
@node History Interaction
|
||||
@section History Interaction
|
||||
@cindex expansion
|
||||
|
||||
The History library provides a history expansion feature that is similar
|
||||
to the history expansion provided by @code{csh}. The following text
|
||||
describes the syntax used to manipulate the history information.
|
||||
|
||||
History expansion takes place in two parts. The first is to determine
|
||||
which line from the previous history should be used during substitution.
|
||||
The second is to select portions of that line for inclusion into the
|
||||
current one. The line selected from the previous history is called the
|
||||
@dfn{event}, and the portions of that line that are acted upon are
|
||||
called @dfn{words}. The line is broken into words in the same fashion
|
||||
that Bash does, so that several English (or Unix) words
|
||||
surrounded by quotes are considered as one word.
|
||||
|
||||
@menu
|
||||
* Event Designators:: How to specify which history line to use.
|
||||
* Word Designators:: Specifying which words are of interest.
|
||||
* Modifiers:: Modifying the results of substitution.
|
||||
@end menu
|
||||
|
||||
@node Event Designators
|
||||
@subsection Event Designators
|
||||
@cindex event designators
|
||||
|
||||
An event designator is a reference to a command line entry in the
|
||||
history list.
|
||||
@cindex history events
|
||||
|
||||
@table @asis
|
||||
|
||||
@item @code{!}
|
||||
Start a history substitution, except when followed by a space, tab,
|
||||
the end of the line, @key{=} or @key{(}.
|
||||
|
||||
@item @code{!!}
|
||||
Refer to the previous command. This is a synonym for @code{!-1}.
|
||||
|
||||
@item @code{!n}
|
||||
Refer to command line @var{n}.
|
||||
|
||||
@item @code{!-n}
|
||||
Refer to the command @var{n} lines back.
|
||||
|
||||
@item @code{!string}
|
||||
Refer to the most recent command starting with @var{string}.
|
||||
|
||||
@item @code{!?string}[@code{?}]
|
||||
Refer to the most recent command containing @var{string}.
|
||||
|
||||
@item @code{!#}
|
||||
The entire command line typed so far.
|
||||
|
||||
@item @code{^string1^string2^}
|
||||
Quick Substitution. Repeat the last command, replacing @var{string1}
|
||||
with @var{string2}. Equivalent to
|
||||
@code{!!:s/string1/string2/}.
|
||||
|
||||
@end table
|
||||
|
||||
@node Word Designators
|
||||
@subsection Word Designators
|
||||
|
||||
A @key{:} separates the event specification from the word designator. It
|
||||
can be omitted if the word designator begins with a @key{^}, @key{$},
|
||||
@key{*} or @key{%}. Words are numbered from the beginning of the line,
|
||||
with the first word being denoted by a 0 (zero).
|
||||
|
||||
@table @code
|
||||
|
||||
@item 0 (zero)
|
||||
The @code{0}th word. For many applications, this is the command word.
|
||||
|
||||
@item n
|
||||
The @var{n}th word.
|
||||
|
||||
@item ^
|
||||
The first argument; that is, word 1.
|
||||
|
||||
@item $
|
||||
The last argument.
|
||||
|
||||
@item %
|
||||
The word matched by the most recent @code{?string?} search.
|
||||
|
||||
@item x-y
|
||||
A range of words; @code{-@var{y}} abbreviates @code{0-@var{y}}.
|
||||
|
||||
@item *
|
||||
All of the words, except the @code{0}th. This is a synonym for @code{1-$}.
|
||||
It is not an error to use @key{*} if there is just one word in the event;
|
||||
the empty string is returned in that case.
|
||||
|
||||
@item x*
|
||||
Abbreviates @code{x-$}
|
||||
|
||||
@item x-
|
||||
Abbreviates @code{x-$} like @code{x*}, but omits the last word.
|
||||
|
||||
@end table
|
||||
|
||||
@node Modifiers
|
||||
@subsection Modifiers
|
||||
|
||||
After the optional word designator, you can add a sequence of one or more
|
||||
of the following modifiers, each preceded by a @key{:}.
|
||||
|
||||
@table @code
|
||||
|
||||
@item h
|
||||
Remove a trailing pathname component, leaving only the head.
|
||||
|
||||
@item r
|
||||
Remove a trailing suffix of the form @samp{.}@var{suffix}, leaving the basename.
|
||||
|
||||
@item e
|
||||
Remove all but the trailing suffix.
|
||||
|
||||
@item t
|
||||
Remove all leading pathname components, leaving the tail.
|
||||
|
||||
@item p
|
||||
Print the new command but do not execute it.
|
||||
|
||||
@ifset BashFeatures
|
||||
@item q
|
||||
Quote the substituted words, escaping further substitutions.
|
||||
|
||||
@item x
|
||||
Quote the substituted words as with @code{q},
|
||||
but break into words at spaces, tabs, and newlines.
|
||||
@end ifset
|
||||
|
||||
@item s/old/new/
|
||||
Substitute @var{new} for the first occurrence of @var{old} in the
|
||||
event line. Any delimiter may be used in place of @key{/}.
|
||||
The delimiter may be quoted in @var{old} and @var{new}
|
||||
with a single backslash. If @key{&} appears in @var{new},
|
||||
it is replaced by @var{old}. A single backslash will quote
|
||||
the @key{&}. The final delimiter is optional if it is the last
|
||||
character on the input line.
|
||||
|
||||
@item &
|
||||
Repeat the previous substitution.
|
||||
|
||||
@item g
|
||||
Cause changes to be applied over the entire event line. Used in
|
||||
conjunction with @code{s}, as in @code{gs/old/new/}, or with
|
||||
@code{&}.
|
||||
|
||||
@end table
|
||||
Loading…
Add table
Add a link
Reference in a new issue