Append user exeflags to env exeflags #209
Merged
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Changes the behavior of the
QUARTONOTEBOOKRUNNER_EXEFLAGS
env variable in conjunction with theexeflags
frontmatter variable.Before, the env variable would only have an effect if no frontmatter variable was specified. Frontmatter exeflags would fully override env exeflags. This is impractical if the env specifies a sysimage to use system-wide but a user wants to change only the number of threads for some notebook.
Therefore, this PR appends the user-specified exeflags to the env-specified ones. This has the effect of merging them as Julia ignores earlier instances of the same flags.