feat: add TASK_SOURCES special variable #2047
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This commit adds the `TASK_SOURCES` variable to tasks. If a task defines the `sources` key, `TASK_SOURCES` contains the list of paths referenced by `sources`. Globs are expanded. This was initially implemented by @hernandanielg in go-task#1146 to fix go-task#948.
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This commit adds the
TASK_SOURCESvariable to tasks. If a task defines thesourceskey,TASK_SOURCEScontains the list of paths referenced bysources. Globs are expanded.This was initially implemented by @hernandanielg in #1146 to fix #948. The PR seemed to have stalled since, which is why I'm now opening this new PR. In contrast to #1146 my changes set
TASK_SOURCESto a list, which allows users to use template functions to transform the value ofTASK_SOURCES. Additionally, I decided to name the variableTASK_SOURCESinstead ofSOURCES, as I wanted to make clear that this variable only exists for tasks.I'm aware of this comment by @callegar which wondered if
sourcesshould be changed to accept the value of variables. However, this seemed like a bigger change to me (I may be wrong since I don't know the code in detail). Therefore I opted to stick with the original proposal.The downside of my change is, that globs get expanded whenever the
TASK_SOURCESvariable is set. I'm not yet sure under which circumstancesCompiler.FastGetVariablesandCompiler.GetVariablesare called. Both of those methods call thegetVariablesmethod which in turn calls thegetSpecialVariablesmethod I modified. Would it be enough to just passevaluateShVarstogetSpecialVariables(maybe renaming it tofastin the process) and skip glob expansion if it istrue?