Fixed Non-ASCII attachment filename will crash when downloading.

Thanks to xet7 !

Fixes #2759

packages/wekan-cfs-worker/internal.api.md

@@ -0,0 +1,143 @@
+## Public and Private API ##
+
+_API documentation automatically generated by [docmeteor](https://github.com/raix/docmeteor)._
+
+***
+
+__File: ["fileWorker.js"](fileWorker.js) Where: {server}__
+
+***
+
+TODO: Use power queue to handle throttling etc.
+Use observe to monitor changes and have it create tasks for the power queue
+to perform.
+
+-
+
+### <a name="FS.FileWorker"></a>*fs*.FileWorker Object&nbsp;&nbsp;<sub><i>Server</i></sub> ###
+
+*This property __FileWorker__ is defined in `FS`*
+
+
+> ```FS.FileWorker = { ...``` [fileWorker.js:9](fileWorker.js#L9)
+
+
+-
+
+### <a name="FS.FileWorker.observe"></a>*fsFileworker*.observe(fsCollection)&nbsp;&nbsp;<sub><i>Server</i></sub> ###
+
+*This method __observe__ is defined in `FS.FileWorker`*
+
+__Arguments__
+
+* __fsCollection__ *{[FS.Collection](#FS.Collection)}*  
+
+__Returns__  *{undefined}*
+
+
+Sets up observes on the fsCollection to store file copies and delete
+temp files at the appropriate times.
+
+> ```FS.FileWorker.observe = function(fsCollection) { ...``` [fileWorker.js:20](fileWorker.js#L20)
+
+
+-
+
+### <a name="getReadyQuery"></a>getReadyQuery(storeName)&nbsp;&nbsp;<sub><i>undefined</i></sub> ###
+
+*This method is private*
+
+__Arguments__
+
+* __storeName__ *{string}*  
+
+ The name of the store to observe
+
+
+
+Returns a selector that will be used to identify files that
+have been uploaded but have not yet been stored to the
+specified store.
+
+{
+$where: "this.chunkSum === this.chunkCount",
+'copies.storeName`: null,
+'failures.copies.storeName.doneTrying': {$ne: true}
+}
+
+> ```function getReadyQuery(storeName) { ...``` [fileWorker.js:83](fileWorker.js#L83)
+
+
+-
+
+### <a name="getDoneQuery"></a>getDoneQuery(stores)&nbsp;&nbsp;<sub><i>undefined</i></sub> ###
+
+*This method is private*
+
+__Arguments__
+
+* __stores__ *{Object}*  
+
+ The stores object from the FS.Collection options
+
+
+
+Returns a selector that will be used to identify files where all
+stores have successfully save or have failed the
+max number of times but still have chunks. The resulting selector
+should be something like this:
+
+{
+$and: [
+{chunks: {$exists: true}},
+{
+$or: [
+{
+$and: [
+{
+'copies.storeName': {$ne: null}
+},
+{
+'copies.storeName': {$ne: false}
+}
+]
+},
+{
+'failures.copies.storeName.doneTrying': true
+}
+]
+},
+REPEATED FOR EACH STORE
+]
+}
+
+
+> ```function getDoneQuery(stores) { ...``` [fileWorker.js:129](fileWorker.js#L129)
+
+
+-
+
+### <a name="saveCopy"></a>saveCopy(fsFile, storeName, options)&nbsp;&nbsp;<sub><i>Server</i></sub> ###
+
+*This method is private*
+
+__Arguments__
+
+* __fsFile__ *{[FS.File](#FS.File)}*  
+* __storeName__ *{string}*  
+* __options__ *{Object}*  
+    * __overwrite__ *{Boolean}*  (Optional, Default = false)
+
+     Force save to the specified store?
+
+
+__Returns__  *{undefined}*
+
+
+Saves to the specified store. If the
+`overwrite` option is `true`, will save to the store even if we already
+have, potentially overwriting any previously saved data. Synchronous.
+
+> ```var makeSafeCallback = function (callback) { ...``` [fileWorker.js:168](fileWorker.js#L168)
+
+