Ignore '=' and ' ' inside {} and () when looking for an assignment operator.
Also require the operator be immediately after any whitespace.
XXX mismatched (){} in variable modifiers will not DTRT.
Note that any of "${}()" in variable names will be griefsome!
Remove the example of using ::= to apply a modifier to a .for loop
variable as that is no longer necessary.
Remember to change the date :-)
Instead of doing a full substitution giving plain text, just replace the
variable part with something that will expand to the required text - leaving
any modifiers for the later evaluation of the input line.
This stops .for being used as an 'eval' (previously you could generate .if etc)
and also means it is still a variable expansion - which some other parts need
to work in the expected fashion.
parts of make that try to scan through variable expansions.
(given the make syntax that is all rather doomed anyway!)
Move the check for $\0 to a place where it will be detected - otherwise
the parser will run off the input buffer!
Use for the .for variables and substution items - changing the latter from
make's all conquering lst.lib functions.
Being able to index everything makes the code simpler.
No functional changes intended.
Replace Buf_Discard() with Buf_Empty() since the former might leave the
'outPtr != buffer' and the only caller wanted all the data discared.
Remove 'outPtr' now that it always equals 'buffer'.
The assumption about Buf_GetAll()is now guaranteed by design.
Use malloc to allocate space for teh strings (instead of a buf structure)
to make it mossible to not leak the associated memory (leak not fixed!).
No functional change intended.
For_Eval() is now only called for the first line of a .for.
For_Accum() is called for the subsequent lines.
Stops any problems with forLevel being left invalid after an error.
Use a return value of -1 from For_Eval() to mean 'skip input line' to stop
a .for line with a syntax error being reparsed by make.
token that follows the argument might be '==' or '!='.
If so then treat as a string comparison instead.
Fixes bin/15233 and bin/30967 provided some whitespace is present.
".if A==A" remains a check for defined(A==A) since make places no
restrictions on the names of variables!
Add a check for the '(' following the function name, if absent then treat
as if the function name is unknown - usually leading to a syntax error.
No other functional changes intended.
(instead of silently ignoring the chars that failed to convert).
Use strtoul() instead of homebrew copy.
Only use strtod() if strtoul() fails because the value is too large or
contains '.', 'e' or 'E'.
Do a compare for strings that start '-' or '+' as well as digits.
conditional block (ie down to the matching .endif) instead of passing
the input line back to the normal parsing code.
Do the same if the maximum .if nesting (64 levels) is breached.
