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Validate version argument (fix NA crash) #6

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Validate version argument (fix NA crash) #6

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8 changes: 8 additions & 0 deletions R/gmd.R
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Expand Up @@ -256,6 +256,14 @@ gmd <- function(variables = NULL, country = NULL, version = NULL,
# ============================================================================
# Version check (S3 first, GitHub fallback)
# ============================================================================

# Reject NA / non-character version early so it doesn't propagate into
# `tolower(version) == "list"` below (which would error with the cryptic
# "missing value where TRUE/FALSE needed")
if (!is.null(version) && (!is.character(version) || length(version) != 1 || is.na(version))) {
stop("`version` must be a single non-NA string (e.g. \"2025_09\"), \"current\", or \"list\".")
}

versions_df <- .gmd_load_versions_df()
available_versions <- sort(unique(versions_df$versions), decreasing = TRUE)
current_version <- available_versions[1]
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