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[completion] Support ignoring '/etc/hosts' entries in host completion

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Entries from static '/etc/hosts' can now be ignored via 'zstyle' based
configuration. Both IP address and corresponding hostname will be ignored
during host completion. However, some of the entries ignored from '/etc/hosts'
still might appear during completion because of their presence in 'ssh'
configuration ('~/.ssh/config') or history ('~/.ssh/ssh_hosts',
'~/.ssh/known_hosts' etc.).
This commit is contained in:
Indrajit Raychaudhuri 2017-07-26 15:16:40 -05:00 committed by Indrajit Raychaudhuri
parent 19435b16ea
commit 9b6bf4a7cd
3 changed files with 32 additions and 2 deletions
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17
modules/completion/README.md
View File

@ -6,6 +6,23 @@ the [zsh-completions][1] project.
This module must be loaded **after** the *utility* module.
Settings
--------
### Ignore */etc/hosts* Entries
To ignore certain entries from static */etc/hosts* for host completion, add the
following lines in *zpreztorc* with the IP addresses of the hosts as they
appear in */etc/hosts*. Both IP address and the corresponding hostname will be
ignored during host completion. However, some of the entries ignored from
*/etc/hosts* still might appear during completion because of their presence in
*ssh* configuration or history).
```sh
zstyle ':prezto:module:completion:*:hosts' etc-host-ignores \
'0.0.0.0' '127.0.0.1'
```
Contributors
------------

9
modules/completion/init.zsh
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@ -102,12 +102,17 @@ zstyle ':completion:*:history-words' menu yes
# Environmental Variables
zstyle ':completion::*:(-command-|export):*' fake-parameters ${${${_comps[(I)-value-*]#*,}%%,*}:#-*-}
# Populate hostname completion.
# Populate hostname completion. But allow ignoring custom entries from static
# */etc/hosts* which might be uninteresting.
zstyle -a ':prezto:module:completion:*:hosts' etc-host-ignores 'etc_host_ignores'
etc_host_ignores=('\#' $etc_host_ignores)
zstyle -e ':completion:*:hosts' hosts 'reply=(
${=${=${=${${(f)"$(cat {/etc/ssh_,~/.ssh/known_}hosts(|2)(N) 2>/dev/null)"}%%[#| ]*}//\]:[0-9]*/ }//,/ }//\[/ }
${=${(f)"$(cat /etc/hosts(|)(N) <<(ypcat hosts 2>/dev/null))"}%%\#*}
${=${(f)"$(cat /etc/hosts(|)(N) <<(ypcat hosts 2>/dev/null))"}%%${(j:*|:)~etc_host_ignores}*}
${=${${${${(@M)${(f)"$(cat ~/.ssh/config 2>/dev/null)"}:#Host *}#Host }:#*\**}:#*\?*}}
)'
unset etc_host_ignores
# Don't complete uninteresting users...
zstyle ':completion:*:*:*:users' ignored-patterns \

8
runcoms/zpreztorc
View File

@ -41,6 +41,14 @@ zstyle ':prezto:load' pmodule \
# Set the query found color.
# zstyle ':prezto:module:autosuggestions:color' found ''
#
# Completions
#
# Set the entries to ignore in static */etc/hosts* for host completion.
# zstyle ':prezto:module:completion:*:hosts' etc-host-ignores \
# '0.0.0.0' '127.0.0.1'
#
# Editor
#