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doc: explain why location's "column" are defined vaguely

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Suuggested by Frank Heckenbach.
<https://lists.gnu.org/r/bug-bison/2022-01/msg00000.html>

* doc/bison.texi (Location Type): Explain why location's "column" are
defined vaguely.
Show tab handling in ltcalc and calc++.
* examples/c/bistromathic/parse.y: Show tab handling.
* examples/c++/calc++/calc++.test,
* examples/c/bistromathic/bistromathic.test:
Check tab handling.
This commit is contained in:
Akim Demaille
2022-01-15 10:28:16 +01:00
parent a475c4d5c1
commit 6ee1494d6e
4 changed files with 79 additions and 5 deletions
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23
examples/c/bistromathic/bistromathic.test
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@@ -366,3 +366,26 @@ err: 1.15: syntax error: expected - or ( or number or function or variable befor
err: 1 | (1++2) + 3 + ''
err: | ^
'
# Check handling of literal tabs. "Escape" them with a C-v, so that
# they are not processed as completion requests.
cat >input<<EOF
*1
 *2
 *3
EOF
# readline processes the tabs itself, and replaces then with spaces.
run -n 0 '> *1
> *2
> *3
> ''
err: 1.9: syntax error: expected end of file or - or ( or exit or number or function etc., before *
err: 1 | *1
err: | ^
err: 2.9: syntax error: expected end of file or - or ( or exit or number or function etc., before *
err: 2 | *2
err: | ^
err: 3.9: syntax error: expected end of file or - or ( or exit or number or function etc., before *
err: 3 | *3
err: | ^
'