diff options
Diffstat (limited to 'third_party/nix/src/tests/lang/eval-okay-ind-string.nix')
-rw-r--r-- | third_party/nix/src/tests/lang/eval-okay-ind-string.nix | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/third_party/nix/src/tests/lang/eval-okay-ind-string.nix b/third_party/nix/src/tests/lang/eval-okay-ind-string.nix new file mode 100644 index 000000000000..1669dc0648ea --- /dev/null +++ b/third_party/nix/src/tests/lang/eval-okay-ind-string.nix @@ -0,0 +1,128 @@ +let + + s1 = '' + This is an indented multi-line string + literal. An amount of whitespace at + the start of each line matching the minimum + indentation of all lines in the string + literal together will be removed. Thus, + in this case four spaces will be + stripped from each line, even though + THIS LINE is indented six spaces. + + Also, empty lines don't count in the + determination of the indentation level (the + previous empty line has indentation 0, but + it doesn't matter). + ''; + + s2 = '' If the string starts with whitespace + followed by a newline, it's stripped, but + that's not the case here. Two spaces are + stripped because of the " " at the start. + ''; + + s3 = '' + This line is indented + a bit further. + ''; # indentation of last line doesn't count if it's empty + + s4 = '' + Anti-quotations, like ${if true then "so" else "not so"}, are + also allowed. + ''; + + s5 = '' + The \ is not special here. + ' can be followed by any character except another ', e.g. 'x'. + Likewise for $, e.g. $$ or $varName. + But ' followed by ' is special, as is $ followed by {. + If you want them, use anti-quotations: ${"''"}, ${"\${"}. + ''; + + s6 = '' + Tabs are not interpreted as whitespace (since we can't guess + what tab settings are intended), so don't use them. + This line starts with a space and a tab, so only one + space will be stripped from each line. + ''; + + s7 = '' + Also note that if the last line (just before the closing ' ') + consists only of whitespace, it's ignored. But here there is + some non-whitespace stuff, so the line isn't removed. ''; + + s8 = '' ${""} + This shows a hacky way to preserve an empty line after the start. + But there's no reason to do so: you could just repeat the empty + line. + ''; + + s9 = '' + ${""} Similarly you can force an indentation level, + in this case to 2 spaces. This works because the anti-quote + is significant (not whitespace). + ''; + + s10 = '' + ''; + + s11 = ''''; + + s12 = '' ''; + + s13 = '' + start on network-interfaces + + start script + + rm -f /var/run/opengl-driver + ${if true + then "ln -sf 123 /var/run/opengl-driver" + else if true + then "ln -sf 456 /var/run/opengl-driver" + else "" + } + + rm -f /var/log/slim.log + + end script + + env SLIM_CFGFILE=${"abc"} + env SLIM_THEMESDIR=${"def"} + env FONTCONFIG_FILE=/etc/fonts/fonts.conf # !!! cleanup + env XKB_BINDIR=${"foo"}/bin # Needed for the Xkb extension. + env LD_LIBRARY_PATH=${"libX11"}/lib:${"libXext"}/lib:/usr/lib/ # related to xorg-sys-opengl - needed to load libglx for (AI)GLX support (for compiz) + + ${if true + then "env XORG_DRI_DRIVER_PATH=${"nvidiaDrivers"}/X11R6/lib/modules/drivers/" + else if true + then "env XORG_DRI_DRIVER_PATH=${"mesa"}/lib/modules/dri" + else "" + } + + exec ${"slim"}/bin/slim + ''; + + s14 = '' + Escaping of ' followed by ': ''' + Escaping of $ followed by {: ''${ + And finally to interpret \n etc. as in a string: ''\n, ''\r, ''\t. + ''; + + # Regression test: antiquotation in '${x}' should work, but didn't. + s15 = let x = "bla"; in '' + foo + '${x}' + bar + ''; + + # Regression test: accept $'. + s16 = '' + cut -d $'\t' -f 1 + ''; + + # Accept dollars at end of strings + s17 = ''ending dollar $'' + ''$'' + "\n"; + +in s1 + s2 + s3 + s4 + s5 + s6 + s7 + s8 + s9 + s10 + s11 + s12 + s13 + s14 + s15 + s16 + s17 |