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tokenizer: Remove unused tabs options - #4422
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Remove the following fields from tok_state structure which are now used unused: * altwarning: "Issue warning if alternate tabs don't match" * alterror: "Issue error if alternate tabs don't match" * alttabsize: "Alternate tab spacing" Replace alttabsize variable with ALTTABSIZE define.
| altcol = (altcol/tok->alttabsize + 1) | ||
| * tok->alttabsize; | ||
| col = (col / tok->tabsize + 1) * tok->tabsize; | ||
| altcol = (altcol / ALTTABSIZE + 1) * ALTTABSIZE; |
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This is just altcol++, isn't?
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I don't know well this code, so I prefer to minimize my changes to avoid any risk of regression.
It looks like the code doesn't round properly for tabsize=1. But I was too lazy to try to understand this old code. I prefer to leave it as it is if something has to change the code later.
FYI I found this code when I wanted to enable tabs/spaces warning in my new developer mode... Then I understood that the warning is always emitted and it's even an hard error...
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I recently learned a new term: Chesterton's fence 😄.
Yes, since we are not going to allow mixing spaces and tabs, altwarning and alterror can be removed. But the algorithm not always works properly (see bpo-32053), and I think that it would be better at least to write it in simpler way.
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Please go ahead and continue to cleanup this code ;-) Be for my side, I'm done. As I wrote, I only cared when the syntax warning was emitted (and it's now always emitted).
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I would prefer to not introduce useless and misleading parameters like ALTTABSIZE.
And, to be pedantic, the syntax warning is now never emitted (the syntax error is emitted instead).
* 'master' of https://github.com/python/cpython: (550 commits) bpo-31867: Remove duplicates in default mimetypes. (python#4388) tokenizer: Remove unused tabs options (python#4422) bpo-31691: Specify where to find build instructions for the Windows installer (python#4426) Fix typo in atexit documentation. (pythonGH-4419) bpo-31702: Allow to specify rounds for SHA-2 hashing in crypt.mksalt(). (python#4110) bpo-32043: New "developer mode": "-X dev" option (python#4413) bpo-30349: Raise FutureWarning for nested sets and set operations (python#1553) bpo-32037: Use the INT opcode for 32-bit integers in protocol 0 pickles. (python#4407) bpo-30143: 2to3 now generates a code that uses abstract collection classes (python#1262) bpo-32030: Enhance Py_Main() (python#4412) bpo-32030: Split Py_Main() into subfunctions (python#4399) bpo-32034: Make IncompleteReadError & LimitOverrunError pickleable python#4409 bpo-32025: Add time.thread_time() (python#4410) bpo-32018: Fix inspect.signature repr to follow PEP 8 (python#4408) bpo-30399: Get rid of trailing comma in the repr of BaseException. (python#1650) bpo-30950: Convert round() to Argument Clinic. (python#2740) bpo-32011: Revert "Issue python#15480: Remove the deprecated and unused TYPE_INT64 code from marshal." (python#4381) bpo-32023: Disallow genexprs without parenthesis in class definitions. (python#4400) bpo-31949: Fixed several issues in printing tracebacks (PyTraceBack_Print()). (python#4289) bpo-32032: Test both implementations of module-level pickle API. (python#4401) ...
Remove the following fields from tok_state structure which are now
used unused:
Replace alttabsize variable with ALTTABSIZE define.