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Replace Only Placeholder #24

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man715 wants to merge 2 commits into from
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Replace Only Placeholder #24

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4011cf3
fix issue with replacing entire argument
Apr 4, 2025
590188c
Merge branch 'main' into main
GangGreenTemperTatum Apr 8, 2025
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8 changes: 6 additions & 2 deletions src/book/runtime.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -198,9 +198,10 @@ impl<'a> FunctionRef<'a> {
.map_err(|e| anyhow!(e))?
.as_str();
let var_default = caps.get(3).map(|m| m.as_str());
let full_match = caps.get(0).unwrap().as_str();

// read variable from the environment if the name starts with env. or ENV.
if var_name.starts_with("env.") || var_name.starts_with("ENV.") {
let replacement_value = if var_name.starts_with("env.") || var_name.starts_with("ENV.") {
let env_var_name = var_name.replace("env.", "").replace("ENV.", "");
let env_var = std::env::var(&env_var_name);
let env_var_value = if let Ok(value) = env_var {
Expand Down Expand Up @@ -235,7 +236,10 @@ impl<'a> FunctionRef<'a> {
default_value.to_string()
} else {
return Err(anyhow::anyhow!("argument {} not provided", var_name));
}
};

// Replace only the pattern within the argument
arg.replace(full_match, &replacement_value)
} else {
arg
});
Expand Down