ash: use pgetc_eatbnl() in more places, take 2

Adding previously skipped "readtoken1(pgetc_eatbnl(), DQSYNTAX..." changes
from upstream commit:

    Date:   Thu Mar 8 08:37:11 2018 +0100
    Author: Harald van Dijk <harald@gigawatt.nl>
    parser: use pgetc_eatbnl() in more places

    dash has a pgetc_eatbnl function in parser.c which skips any
    backslash-newline combinations. It's not used everywhere it could be.
    There is also some duplicated backslash-newline handling elsewhere in
    parser.c. Replace most of the calls to pgetc() with calls to
    pgetc_eatbnl() and remove the duplicated backslash-newline handling.

    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/shell/ash.c b/shell/ash.c
index fb4028219..c177ac038 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -12194,7 +12194,7 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
                         }
                         USTPUTC(c, out);
                         nlprompt();
-                        c = pgetc();
+                        c = synstack->syntax == SQSYNTAX ? pgetc() : pgetc_eatbnl();
                         goto loop;              /* continue outer loop */
                 case CWORD:
                         USTPUTC(c, out);
@@ -12226,8 +12226,6 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
                                 USTPUTC(CTLESC, out);
                                 USTPUTC('\\', out);
                                 pungetc();
-                        } else if (c == '\n') {
-                                nlprompt();
                         } else {
                                 if (pssyntax && c == '$') {
                                         USTPUTC(CTLESC, out);
@@ -12347,7 +12345,7 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
                         IF_ASH_ALIAS(if (c != PEOA))
                                 USTPUTC(c, out);
                 }
-                c = pgetc();
+                c = synstack->syntax == SQSYNTAX ? pgetc() : pgetc_eatbnl();
         } /* for (;;) */
  endword:
 
@@ -13093,8 +13091,10 @@ parseheredoc(void)
         while (here) {
                 tokpushback = 0;
                 setprompt_if(needprompt, 2);
-                readtoken1(pgetc(), here->here->type == NHERE ? SQSYNTAX : DQSYNTAX,
-                                here->eofmark, here->striptabs);
+                if (here->here->type == NHERE)
+                        readtoken1(pgetc(), SQSYNTAX, here->eofmark, here->striptabs);
+                else
+                        readtoken1(pgetc_eatbnl(), DQSYNTAX, here->eofmark, here->striptabs);
                 n = stzalloc(sizeof(struct narg));
                 n->narg.type = NARG;
                 /*n->narg.next = NULL; - stzalloc did it */