bash programmable completion

Hi, you might wanna have a look at ClearCase completion script. jan.tomka.name/project...

svn mod: listing targets of imported build files
in bash_completion _ant()

change:

local cur prev buildfile i

to:

local cur prev buildfile imports i f

add:

imports=(

$( awk -F'"' '/<import file="/ {print $2}' \

$buildfile )

$( awk -F"'" "/<target name='/ "'{print $2}' \

$buildfile )

)

for f in ${imports[@]}; do

if [[ -e $f ]]; then

COMPREPLY=( ${COMPREPLY[@]} \

$( awk -F'"' '/<target name="/ {print $2}' \

$f | grep "^$cur" | grep -v '^-' )

$( awk -F"'" "/<target name='/ "'{print $2}' \

$f | grep "^$cur" | grep -v '^-' )

$( awk -F'"' '/<target [^n]/ {if ($1 ~ /name=/) { print $2 } else if ($3 ~ /name=/) {print $4} else if ($5 ~ /name=/) {print $6}}' \

$f | grep "^$cur" | grep -v '^-' ) )

fi

done

change:

have complete-ant-cmd.pl && \

complete -C complete-ant-cmd.pl -F _ant $filenames ant || \

complete -F _ant $filenames ant

}

to:

have complete-ant-cmd.pl && \

complete -C complete-ant-cmd.pl -F _ant $filenames ant || \

complete -F _ant ant

}

cd mod allowing ignore directories
Allows one not to have to deal with '.svn' and

'CVS' directories.

in .bashrc

cdignore=( CVS .svn )

in bash_completion _cd() add:

if [ -z "${CDPATH:-}" ] || [[ "$cur" == ?(.)?(.)/* ]]; then

_filedir -d

if [[ -n "$cdignore" ]]; then

k=0

a=()

for f in ${COMPREPLY[@]}; do

i=0

for v in ${cdignore[@]}; do

if [[ "$f" == "$v" ]]; then

i=1

fi

done

if [[ $i -eq 0 ]]; then

a[k++]=$f

fi

done

COMPREPLY=( ${a[@]} )

fi

return 0

fi

Re: Example of broken completion (mixing env variable and path)
A bit more work on it to get rid of the redunant loop yields:

%_cd()
%{
> local IFS=$'\t\n' cur=${COMP_WORDS[COMP_CWORD]} i j k
%
%# (start of changes)
> if [[ "$cur" == ?(\\)\$* ]]; then
> local v vars
> vars=($(for v in $(compgen -v -X !${cur#?(\\)$}*); do if [ -d "$(eval echo \$$v)" ]; then echo \$$v; fi; done))
> if (( ${#vars[*]} == 1 )); then
> # A single completion. Expand it.
> COMPREPLY=($(eval echo $vars))
> return 0
> fi
> # No single completion. Then just list the variables being directories.
> COMPREPLY=(${vars[*]});
> return 0
> fi
>
%# old stuff ...
%# # try to allow variable completion
%# if [[ "$cur" == ?(\\)\$* ]]; then
%# COMPREPLY=( $( compgen -v -P '$' -- "${cur#?(\\)$}" ) )
%# return 0
%# fi
%# (unchanged from here)

Re: Example of broken completion (mixing env variable and path)
Working a bit more on it, the follwoing code does the same more elegantly:

_cd()

{

local IFS=$'\t\n' cur=${COMP_WORDS[COMP_CWORD]} i j k

# Start of modifications

if [[ "$cur" == ?(\\)\$* ]]; then

local v vars=$(compgen -v -X !${cur#?(\\)$}*)

COMPREPLY=(`for v in $vars; do if [ -d "$(eval echo \\$$v)" ]; then eval echo \\$$v; fi; done`)

if (( ${#COMPREPLY[*]} == 1 )); then

return 0

fi

# No single completion. Then just list the variables being directories.

COMPREPLY=(`for v in $vars; do if [ -d "$(eval echo \\$$v)" ]; then echo \\$$v; fi; done`);

return 0

fi

# old stuff removed

# # try to allow variable completion

# if [[ "$cur" == ?(\\)\$* ]]; then

# COMPREPLY=( $( compgen -v -P '$' -- "${cur#?(\\)$}" ) )

# return 0

# fi

#

# (unchanged from here)