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a535da7)
The histignorealldups option provides a feature, that if a new command
line being added to the history list duplicates an older one, the older
command is removed from the list.
Demonstration:
| root@grml ~ # echo foo
| foo
| root@grml ~ # echo bar
| bar
| root@grml ~ # history -E 0
| 1 9.7.2021 07:48 exec zsh
| 2 9.7.2021 07:48 echo foo
| 3 9.7.2021 07:48 echo bar
| root@grml ~ # echo foo
| foo
| root@grml ~ # history -E 0
| 1 9.7.2021 07:48 exec zsh
| 3 9.7.2021 07:48 echo bar
| 5 9.7.2021 07:48 echo foo
This is certainly useful for several people, like in personal setups.
But especially for system administration tasks it's quite essential,
that the history shows "the full truth", and it's hard to reconstruct
the order of commands that have been executed.
Whoever wants to get the old behavior back, can enable `setopt
histignorealldups` in their personal zshrc. Provide the according
configuration snippet in /etc/skel/.zshrc instead, and update docs
accordingly.
Closes: grml/grml-etc-core#114
Whenever a command completion is attempted, make sure the entire command
path is hashed first. This makes the first completion slower.
Whenever a command completion is attempted, make sure the entire command
path is hashed first. This makes the first completion slower.
-: **histignorealldups** <grml>
-If a new command line being added to the history list duplicates an
-older one, the older command is removed from the list, even if it is
-not the previous event.
-
: **histignorespace** <grml>
Remove command lines from the history list when the first character on
the line is a space, or when one of the expanded aliases contains a
: **histignorespace** <grml>
Remove command lines from the history list when the first character on
the line is a space, or when one of the expanded aliases contains a
## Allow comments even in interactive shells
#setopt interactivecomments
## Allow comments even in interactive shells
#setopt interactivecomments
+## if a new command line being added to the history list duplicates an older
+## one, the older command is removed from the list
+#is4 && setopt histignorealldups
## compsys related snippets ##
## compsys related snippets ##
# save each command's beginning timestamp and the duration to the history file
setopt extended_history
# save each command's beginning timestamp and the duration to the history file
setopt extended_history
-# If a new command line being added to the history list duplicates an older
-# one, the older command is removed from the list
-is4 && setopt histignorealldups
-
# remove command lines from the history list when the first character on the
# line is a space
setopt histignorespace
# remove command lines from the history list when the first character on the
# line is a space
setopt histignorespace