diff options
Diffstat (limited to 'Src/subst.c')
| -rw-r--r-- | Src/subst.c | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/Src/subst.c b/Src/subst.c index f52bcdfc8..d4a04b8e5 100644 --- a/Src/subst.c +++ b/Src/subst.c @@ -259,10 +259,19 @@ stringsubst(LinkList list, LinkNode node, int pf_flags, int asssub) #endif str--; } else if (c == Inparmath) { - /* Math substitution of the form $((...)) */ + /* + * Math substitution of the form $((...)). + * These can be nested, for goodness sake... + */ + int mathpar = 1; str[-1] = '\0'; - while (*str != Outparmath && *str) + while (mathpar && *str) { str++; + if (*str == Outparmath) + mathpar--; + else if (*str == Inparmath) + mathpar++; + } if (*str != Outparmath) { zerr("failed to find end of math substitution"); return NULL; @@ -1592,7 +1601,7 @@ paramsubst(LinkList l, LinkNode n, char **str, int qt, int pf_flags) /* combination of (L), (U) and (C) flags. */ int casmod = CASMOD_NONE; /* - * quotemod says we are doing either (q) (positive), (Q) (negative) + * quotemod says we are doing either (q/b) (positive), (Q) (negative) * or not (0). quotetype counts the q's for the first case. * quoterr is simply (X) but gets passed around a lot because the * combination (eX) needs it. @@ -1845,7 +1854,8 @@ paramsubst(LinkList l, LinkNode n, char **str, int qt, int pf_flags) break; case 'q': - if (quotetype == QT_DOLLARS) + if (quotetype == QT_DOLLARS || + quotetype == QT_BACKSLASH_PATTERN) goto flagerr; if (s[1] == '-') { if (quotemod) @@ -1861,6 +1871,12 @@ paramsubst(LinkList l, LinkNode n, char **str, int qt, int pf_flags) quotemod++, quotetype++; } break; + case 'b': + if (quotemod || quotetype != QT_NONE) + goto flagerr; + quotemod = 1; + quotetype = QT_BACKSLASH_PATTERN; + break; case 'Q': quotemod--; break; @@ -3460,7 +3476,7 @@ paramsubst(LinkList l, LinkNode n, char **str, int qt, int pf_flags) if (quotemod) { int pre = 0, post = 0; - if (quotemod > 0 && quotetype > QT_BACKSLASH) { + if (quotemod > 0) { switch (quotetype) { case QT_DOLLARS: @@ -3471,6 +3487,9 @@ paramsubst(LinkList l, LinkNode n, char **str, int qt, int pf_flags) case QT_SINGLE_OPTIONAL: /* quotes will be added for us */ + case QT_BACKSLASH: + case QT_BACKSLASH_PATTERN: + /* no quotes */ break; default: |