CVS commit: src/bin/sh

["Robert Elz" <kre%netbsd.org@localhost>]

Module Name:    src
Committed By:   kre
Date:           Wed May  3 04:51:05 UTC 2017

Modified Files:
        src/bin/sh: input.c input.h parser.c

Log Message:
Deal with \newline line continuations more correctly.
They can occur anywhere (*anywhere*) not only where it
happens to be convenient to the parser...

This fix from FreeBSD (thanks again folks).

To make this work, pushstring()'s signature needed to change to allow a
const char * as its string arg, which meant sprinkling some const other
places for a brighter appearance (and handling fallout).

All this because I wanted to see what number would come from

echo $\
{\
L\
I\
N\
E\
N\
O\
}

and was surprised at the result!    That works now...

The bug would also affect stuff like

true &\
& false

and all kinds of other uses where the \newline occurred in the
"wrong" place.

An ATF test for sh syntax is coming... (sometime.)


To generate a diff of this commit:
cvs rdiff -u -r1.54 -r1.55 src/bin/sh/input.c
cvs rdiff -u -r1.17 -r1.18 src/bin/sh/input.h
cvs rdiff -u -r1.120 -r1.121 src/bin/sh/parser.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.