allow RUST_BACKTRACE=0 to act as if unset
/# This is a combination of 16 commits. /# The first commit's message is: allow RUST_BACKTRACE=disabled to act as if unset When RUST_BACKTRACE is set to "disabled" then this acts as if the env. var is unset. /# This is the 2nd commit message: case insensitive "DiSaBLeD" RUST_BACKTRACE value previously it expected a lowercase "disabled" to treat the env. var as unset /# This is the 3rd commit message: RUST_BACKTRACE=0 acts as if unset previously RUST_BACKTRACE=disabled was doing the same thing /# This is the 4th commit message: RUST_BACKTRACE=0|n|no|off acts as if unset previously only RUST_BACKTRACE=0 acted as if RUST_BACKTRACE was unset Now added more options (case-insensitive): 'n','no' and 'off' eg. RUST_BACKTRACE=oFF /# This is the 5th commit message: DRY on the value of 2 DRY=don't repeat yourself Because having to remember to keep the two places of '2' in sync is not ideal, even though this is a simple enough case. /# This is the 6th commit message: Revert "DRY on the value of 2" This reverts commit 95a0479d5cf72a2b2d9d21ec0bed2823ed213fef. Nevermind this DRY on 2, because we already have a RY on 1, besides the code is less readable this way... /# This is the 7th commit message: attempt to document unsetting RUST_BACKTRACE /# This is the 8th commit message: curb allocations when checking for RUST_BACKTRACE this means we don't check for case-insensitivity anymore /# This is the 9th commit message: as decided, RUST_BACKTRACE=0 turns off backtrace /# This is the 10th commit message: RUST_TEST_NOCAPTURE=0 acts as if unset (that is, capture is on) Any other value acts as if nocapture is enabled (that is, capture is off) /# This is the 11th commit message: update other RUST_TEST_NOCAPTURE occurrences apparently only one place needs updating /# This is the 12th commit message: update RUST_BACKTRACE in man page /# This is the 13th commit message: handle an occurrence of RUST_BACKTRACE /# This is the 14th commit message: ensure consistency with new rules for backtrace /# This is the 15th commit message: a more concise comment for RUST_TEST_NOCAPTURE /# This is the 16th commit message: update RUST_TEST_NOCAPTURE in man page
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9 changed files with 59 additions and 17 deletions
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@ -36,7 +36,7 @@ pub fn log_enabled() -> bool {
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}
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let val = match env::var_os("RUST_BACKTRACE") {
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Some(..) => 2,
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Some(x) => if &x == "0" { 1 } else { 2 },
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None => 1,
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};
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ENABLED.store(val, Ordering::SeqCst);
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