diff options
| author | Bram Moolenaar <Bram@vim.org> | 2019-05-12 13:53:50 +0200 |
|---|---|---|
| committer | Bram Moolenaar <Bram@vim.org> | 2019-05-12 13:53:50 +0200 |
| commit | 8aad88d8de256e58f04054eb7230c9613e26502f (patch) | |
| tree | cb9b0add2649f499fe2b95c94ae92bd9e6569f8f /runtime | |
| parent | 97b0075b0d733cc58c29247b09e7887b9991d7bf (diff) | |
patch 8.1.1326: no test for listener with partialv8.1.1326
Problem: No test for listener with partial.
Solution: Add a test. Add example to help.
Diffstat (limited to 'runtime')
| -rw-r--r-- | runtime/doc/eval.txt | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt index 0b71c44dab..c1123ab6fa 100644 --- a/runtime/doc/eval.txt +++ b/runtime/doc/eval.txt @@ -6323,7 +6323,8 @@ listener_add({callback} [, {buf}]) *listener_add()* Returns a unique ID that can be passed to |listener_remove()|. The {callback} is invoked with a list of items that indicate a - change. Each list item is a dictionary with these entries: + change. The list cannot be changed. Each list item is a + dictionary with these entries: lnum the first line number of the change end the first line below the change added number of lines added; negative if lines were @@ -6349,7 +6350,21 @@ listener_add({callback} [, {buf}]) *listener_add()* added zero col first column with a change or one - The {callback} is invoked just before the screen is updated. + The entries are in the order the changes was made, thus the + most recent change is at the end. One has to go through the + list from end to start to compute the line numbers in the + current state of the text. + + When using the same function for multiple buffers, you can + pass the buffer to that function using a |Partial|. + Example: > + func Listener(bufnr, changes) + " ... + endfunc + let bufnr = ... + call listener_add(function('Listener', [bufnr]), bufnr) + +< The {callback} is invoked just before the screen is updated. To trigger this in a script use the `:redraw` command. The {callback} is not invoked when the buffer is first loaded. @@ -10984,10 +10999,10 @@ expressions |expr-lambda|. Example: > function Something(key, value = 10) - echo a:key .. ": " .. value + echo a:key .. ": " .. a:value endfunction call Something('empty') "empty: 10" - call Something('key, 20) "key: 20" + call Something('key', 20) "key: 20" The argument default expressions are evaluated at the time of the function call, not definition. Thus it is possible to use an expression which is |