diff options
Diffstat (limited to 'Doc/Zsh')
| -rw-r--r-- | Doc/Zsh/contrib.yo | 52 | ||||
| -rw-r--r-- | Doc/Zsh/expn.yo | 25 |
2 files changed, 38 insertions, 39 deletions
diff --git a/Doc/Zsh/contrib.yo b/Doc/Zsh/contrib.yo index c5808fbeb..5b9af12f3 100644 --- a/Doc/Zsh/contrib.yo +++ b/Doc/Zsh/contrib.yo @@ -302,10 +302,13 @@ called at the same point; these are so-called `hook functions'. The shell function tt(add-zsh-hook) provides a simple way of adding or removing functions from the array. -var(hook) is one of tt(chpwd), tt(periodic), tt(precmd) or tt(preexec), -the special functions in question. +var(hook) is one of tt(chpwd), tt(periodic), tt(precmd), tt(preexec), +tt(zshaddhistory), tt(zshexit), or tt(zsh_directory_name), +the special functions in question. Note that tt(zsh_directory_name) +is called in a different way from the other functions, but may +still be manipulated as a hook. -var(functions) is name of an ordinary shell function. If no options +var(function) is name of an ordinary shell function. If no options are given this will be added to the array of functions to be executed in the given context. @@ -315,6 +318,10 @@ the array of functions to be executed. If the option tt(-D) is given, the var(function) is treated as a pattern and any matching names of functions are removed from the array of functions to be executed. + +The options tt(-U), tt(-z) and tt(-k) are passed as arguments to +tt(autoload) for var(function). For functions contributed with zsh, the +options tt(-Uz) are appropriate. ) enditem() @@ -544,36 +551,15 @@ enditem() subsect(Use with dynamic directory naming) It is possible to refer to recent directories using the dynamic directory -name syntax that appeared in zsh version 4.3.7. If you create and -autoload a function tt(zsh_directory_name) containing the following code, -tt(~[1]) will refer to the most recent directory other than $PWD, and so on. -This also includes completion. - -example(if [[ $1 = n ]]; then - if [[ $2 = <-> ]]; then - # Recent directory - typeset -ga reply - autoload -Uz cdr - cdr -r - if [[ -n ${reply[$2]} ]]; then - reply=LPAR()${reply[$2]}RPAR() - return 0 - else - reply=LPAR()RPAR() - return 1 - fi - fi -elif [[ $1 = c ]]; then - if [[ $PREFIX = <-> || -z $PREFIX ]]; then - typeset -a keys values - values=LPAR()${${(f)"$+LPAR()cdr -l+RPAR()"}/ ##/:}RPAR() - keys=LPAR()${values%%:*}RPAR() - _describe -t dir-index 'recent directory index' \ - values keys -V unsorted -S']' - return - fi -fi -return 1) +name syntax by using the supplied function tt(zsh_directory_name_cdr) +a hook: + +example(autoload -Uz add-zsh-hook +add-zsh-hook -Uz zsh_directory_name zsh_directory_name_cdr) + +When this is done, tt(~[1]) will refer to the most recent +directory other than $PWD, and so on. Completion after tt(~[)var(...) +also works. subsect(Details of directory handling) diff --git a/Doc/Zsh/expn.yo b/Doc/Zsh/expn.yo index 9c4491386..1bace49c3 100644 --- a/Doc/Zsh/expn.yo +++ b/Doc/Zsh/expn.yo @@ -1517,8 +1517,12 @@ cindex(directories, named, dynamic) cindex(named directories, dynamic) cindex(dynamic named directories) -The feature described here is only available if the shell function -tt(zsh_directory_name) exists. +If the function tt(zsh_directory_name) exists, or the shell variable +tt(zsh_directory_name_functions) exists and contains an array of +function names, then the functions are used to implement dynamic +directory naming. The functions are tried in order until one returns +status zero, so it is important that functions test whether they can +handle the case in question and return an appropriate status. A `tt(~)' followed by a string var(namstr) in unquoted square brackets is treated specially as a dynamic directory name. Note that the first @@ -1529,11 +1533,12 @@ which is the directory corresponding to the name and return status zero (executing an assignment as the last statement is usually sufficient), or it should return status non-zero. In the former case the element of reply is used as the directory; in the latter case the substitution is deemed to -have failed and tt(NOMATCH) handling is applied if the option is set. +have failed. If all functions fail and the option tt(NOMATCH) is set, +an error results. -The function tt(zsh_directory_name) is also used to see if a directory can +The functions defined as above are also used to see if a directory can be turned into a name, for example when printing the directory stack or -when expanding tt(%~) in prompts. In this case the function is passed two +when expanding tt(%~) in prompts. In this case each function is passed two arguments: the string tt(d) (for directory) and the candidate for dynamic naming. The function should either return non-zero status, if the directory cannot be named by the function, or it should set the array reply @@ -1551,7 +1556,15 @@ parts of the directory path, as described below; it is used if the prefix length matched (16 in the example) is longer than that matched by any static name. -The completion system calls `tt(zsh_directory_name c)' in order to +It is not a requirement that a function implements both +tt(n) and tt(d) calls; for example, it might be appropriate for certain +dynamic forms of expansion not to be contracted to names. In that case +any call with the first argument tt(d) should cause a non-zero status to +be returned. + +The completion system calls `tt(zsh_directory_name c)' followed by +equivalent calls to elements of the array +tt(zsh_directory_name_functions), if it exists, in order to complete dynamic names for directories. The code for this should be as for any other completion function as described in ifnzman(noderef(Completion System))\ |