Problem: Cannot use octal numbers in scriptversion 4.
Solution: Add the "0o" notation. (Ken Takata, closesvim/vim#5304)
c17e66c5c0
:scriptversion is N/A.
Cherry-pick latest str2nr() doc changes from v8.1.2035.
Cherry-pick various mentions of the 0o prefix from:
- v8.2.2324
- 2346a63784
- 11e3c5ba82
- 82be4849ee
Patch used ascii_isbdigit() by mistake, which was fixed in v8.2.2309.
Make STR2NR_OOCT work the same as STR2NR_OCT when forcing.
In Vim, STR2NR_FORCE | STR2NR_OOCT isn't handled, and doesn't actually
force anything. Rather than abort(), make it work as STR2NR_OCT.
This means STR2NR_FORCE | STR2NR_OCT works the same as
STR2NR_FORCE | STR2NR_OOCT and STR2NR_FORCE | STR2NR_OCT | STR2NR_OOCT.