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patch 8.0.1406: difficult to track changes to a quickfix list

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Problem:    Difficult to track changes to a quickfix list.
Solution:   Add a "changedtick" value. (Yegappan Lakshmanan, closes #2460)
This commit is contained in:
Bram Moolenaar
2017-12-18 19:48:58 +01:00
parent c9e649ae81
commit b254af312d
5 changed files with 120 additions and 6 deletions
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8
runtime/doc/quickfix.txt
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@ -64,6 +64,14 @@ When a window with a location list is split, the new window gets a copy of the
location list. When there are no longer any references to a location list,
the location list is destroyed.
*quickfix-changedtick*
Every quickfix and location list has a read-only changedtick variable that
tracks the total number of changes made to the list. Every time the quickfix
list is modified, this count is incremented. This can be used to perform an
action only when the list has changed. The getqflist() and getloclist()
functions can be used to query the current value of changedtick. You cannot
change the changedtick variable.
The following quickfix commands can be used. The location list commands are
similar to the quickfix commands, replacing the 'c' prefix in the quickfix
command with 'l'.